) Ak Factor Core Velocity Velocity Pressure Neg. 5 inches square (0. Air transfer grilles are vents that are fitted into doors or walls to allow air to move freely around a building, helping it to stay ventilated. Clearance dimension 430x75 mm. Displacement diffusers. Our Acoustic Transfer Grilles are available in a range of sizes and finishes to suit your requirements. 5mm. with a door sleeve and electrical door wiring loop for a 45mm or 54mm door or a wall sleeve only, for a wall/partition. 03 m 2 ) (of grille area) to 100 cfm (. 98 -9%. Gilberts has built a reputation for providing an extensive range of contemporary, value engineered products at the best in competitive. Non-vision air transfer grilles, made of aluminium, withRETURN GRILLE DOOR/TRANSFER GRILLES MODELS: DG-I, DG-2, DG-3 DG-I CORE ONLY 11/16" 5/16" DG-2 Single Flange SUSTATNABLE EXTRUDED ALUMINUM Dimensions are in inches (mm) a DG-I Core only Door Transfer Glille a DG-2 Single Flange Door Transfer Glille a DG-3 Double Flange Door Transfer Glille OPTIONS: 11/16". CERTIFICATIONS. Lattice and perforated security grilles reduce the risk of damage and disassembly associated with traditional grilles in secure areas. Door undercuts are often obstructed by carpets further reducing return pathways. OVERALL SIZE LIST HEIGHT OR WIDTH + 45mm 13mm 32mm 25mm 75mm 48mm 98mm 19mm LIST HEIGHT OR WIDTH - 19mm Pitch INSIDE SIZE OF DUCT OR TIMBER GROUND = LIST HEIGHT OR WIDTH OF GRILLERETURN GRILLE DOOR/TRANSFER GRILLES MODELS: DG-I, DG-2, DG-3 DG-I CORE ONLY 11/16" 5/16" DG-2 Single Flange SUSTATNABLE EXTRUDED ALUMINUM Dimensions are in inches (mm) a DG-I Core only Door Transfer Glille a DG-2 Single Flange Door Transfer Glille a DG-3 Double Flange Door Transfer Glille OPTIONS: 11/16". It adjusts to suit a door thickness from 1-3/8" to 1-7/8". acoustic transfer grill 468AK/2. Manufactured using modern<br />. Brass is one of the most popular materials for decorative grilles but most often brass grilles are used internally where the finish on the woven lattice or decorative screen will be more stable. Using the same intumescent louvred slat configuration as the LVN20, but incorporating an electro mechanically operated smoke shutter mechanism. 3. ft. LOUVRES. 304 Stainless Steel Construction (Optional 316 Stainless Steel) Z-Shaped Deflection Vanes Set on 1” Centers. The Waterloo fire rated ventilators are suitable for 1 hour rated doors and partitions. Speci˚ed Door Opening Speci˚ed Door Opening - 1/8 1 5 16 2 13 32 Model : XG-DGCO ( Door / Transfer Grille - Core Only ) Model : XG-DGSF ( Door / Transfer Grille - Single Flange Frame ) Model : XG-DGDF ( Door / Transfer Grille - Double Flange Frame ) Model : XG-DGLP ( Door / Transfer Grille - Light Resistant ) Face View ( Models: XG-DGDF &Lorient has been developing high quality intumescent air transfer grilles for over 40 years; combining air movement with fire protection & making buildings s. 60% Free Area. Manufacturer : Madel. Still family owned Gilberts operates from its 120,000 sq ft manufacturing base in Blackpool, Lancashire with an annual turnover in excess of £20 million. Use your stud finder and level to map out the exact location where you’re going to cut through the wallboard. They can be used for providing dampers in ductwork. Steel Maximum Security Grille with Square Perforations. Model Series 51DG offers the largest free area possible (average > 50%) with a completely sight-proof. The Waterloo adjustable, single and double deflection grilles are suitable for duct, ceiling and sidewall applications in most commercial projects. Download catalogue. Our grilles have high quality paint finishes and accessories to suit your individual requirements. Transfer those measurements to where you want to install the vent. The grille vanes are individually adjustable to allow jet spread or deflection to be set within 45 of the duct axis. Specifications - Gilberts (Blackpool) EN English Deutsch Français Español Português Italiano Român Nederlands Latina Dansk Svenska Norsk Magyar Bahasa Indonesia Türkçe Suomi Latvian Lithuanian český русский български العربية Unknown Clifton Rd, Blackpool, FY4 4QT. Or leave the doors open, cut the bottom off the door, 3" will help but looks weird. supplied by Gilberts with each Grille batch. The only place I can install transfer grilles is above the doors. To contact us please call: +44 1253 766911. Really Helps with transfer air and the rooms feel more comfortable when the door is closed since the air pressure is not building up without a way to return to the air handler. Share. We are the world's oldest manufacturer of decorative metal grilles. Series GA WFV, WFVG, WFG Fire-rated Air Transfer Grilles. Iron Maindoor Laser Safety Grill, For Home ₹. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. The range is available with a wide variety of frame and fixing options to suit various design needs. In the event of an alarm condition, or power failure, the smoke shutters shut, preventing the passage of cold smoke. ) Ak Factor Core Velocity Velocity Pressure Neg. Recommended price. or check out our Support Center. Gilberts (Blackpool) limited is one of the largest UK manufacturers of Grilles, Diffusers, Louvres, Smoke/Fire Dampers and Natural Ventilation Systems for the Heating, Ventilating and Air Conditioning industry. Allows window to remain and door closed for a room when operating a whole house fan. If at hallways, then, they are a code violation nowadays, as door grilles are not fire rated, there may some rated doors with grilles, but it is your case? 2. Grille (optional – supplied by others) 5. Jackshaft (indicates damper positioning) 9. Telephone: (01253) 766911 Fax: (01253) 767941 e-mail: sales@gilbertsblackpool. Door grilles provide visual security and limits light while allowing air transfer through doors or walls. Polyaire Product Catalogue - Door Relief Grille. <br><br>The Perfect Balance In-Door Return Air Pathway is designed to maintain adequate air flow between rooms and eliminate pressure imbalancesallowing each room. 4. 012. These are often used in bathroom doors and mechanical room doors for the purpose of allowing make up air to enter the room when the fan is on and the door is closed. (Matt black finish). AG40 Bar Grille. Transfer units. Introduction Gilberts AV1601 Series presents an attractive alternative to traditional vision proof door mounting air transfer grilles. DL. Single Core with Flat Frame. Introduction. 3. Air Flow : 21 m3/h. 450x92. Innovative. 065 400. HVAC OV 17. GILBERTS DAMPERS 8 MAY 2005 PUBLICATION Features 60 or 120 Minute Fire Rating. Available in nominal 1" (25) increments. Series NV Vision Proof Transfer Grilles. 6145H - Steel • 45° Deflection. Acoustic, smoke + fire containment systems. 6") HVAC OV 17. Countersunk holes. To be used where air movement/flow via fan is stopped in the event of a fire. Duct registers, grilles and diffusers shall be installed in accordance with the manufacturer’s instructions. Contact Us. 1H 1V 2H 2V. uk. DSR units will only provide acoustic isolation improvements over that of a clear aperture. With a dedicated design team working on both new. Genuine Comfort find that air return grilles tend to be the better choice between transfer grilles and air return grilles. Construction Details All Dimensions ±1/16" Standard Finish: 01 White Finish 24 Mill Finish Optional Finish 02 Satin Silver 03 Black 28 Custom Color Extruded Aluminum Constructionjinteriordesignonline. NV2 is a Vision proof core in 32mm flanged border. Easy to assemble. 5mm coldTransfer Grille Baffle. Heavy duty registers and grilles work well in any application where the air volume is large and easy removal for cleaning is required. Duct diffusers. 1 (7 reviews) Extruded aluminum grille supply. A. SCHAKO sight-proof transfer grilles are overflow grilles for walls and doors and are used between two adjacent rooms for pressure compensation. Please watch our corporate video. 005 150. 002 0. 001. ArchiExpo offers ventilation grates and. fitting a conventional grille to a wall or door will totally negate other measures taken to prevent the spread of fire, hot smoke andGrilles Type AH · WAP · AF Installation situation Type AH, AF ≥X Nomenclature ‡ in l/s/m based on 1000mm nominal grille length . GRILLES 9 OCTOBER 2021 PUBLICATION Features - Door or Wall Mounted. This 24V DC supply provides Today the range includes duct mounting smoke/fire dampers, curtain fire dampers, smoke evacuation dampers, intumescent air transfer grilles and air volume control dampers Engineering led our products are designed to offer the highest level of performance safety and security and are tested to the relevant BS/EN standards as well as CE marked. Air Distribution | GDL Air Systems Limited | England ATG. Grilles, Diffusers, External Louvres, Smoke Dampers, Fire Dampers, Volume Control Dampers. NV3 is a Vision proof core in 32mm flanged border with matching telescopic back flange. 01924 444 174 [email protected] could be soil gases such as radon or fumes from paints, pesticides, or fuel stored in the crawlspace. Single Core with Flat Frame. 200. 001. Designed to be fitted in doors, walls and ducts they provide a cost effective solution in allowing free air movement and yet maintain the integrity of the door or wall in a fire situation. Modern Slavery Policy. The Manual J (i. Blades are chevron in configreation and are mounted in a fixed position ina rigid PVC track in an integral part of the frame. other commercial projects. Fascia Cover Grilles For Fascia Grille options please refer to Gilberts Air Distribution Catalogue “Grilles” section Damper & Mounting Frame Damper with vertical blades for air passage and 15mm returned edge all round for ixing to structure. TROX Services. The high-low offset is located in an interior wall framing cavity adjacent to the door between the room and common space. 57 (29 grilles required) 0. Installation is simple and should only take 30-45 minutes with the right tools. But wherever air moves, fire and smoke can travel too. Titus Door transfer grilles are great for use indoors and partitions. Our range of Non-Vision Grilles models include: NV1: Standard flanged grille. Lorient cover grilles offer flexibility when considering aesthetics. The damper can be suitably masked on both sides either with steel type A grilles or aluminium non-vision type B grilles. The solution - Remove the face damper installed near the register or grille and. SERIES OPTIONS WGF/75:Comprises of 16 SWG LouvresThe grille is also suitable as a general replacement for 600sq floor tiles where areas of heavy foot traffic and equipment would be experienced. It is used in both natural and forced-air ventilation systems. Description. 0006 0. 6" Inch Door Air Vent Grille Two Sided Ventilation Cover - White - Overflow Ventilation Grill - Door Vent Cover - Free AIR Flow Between Rooms - Package of 2-450mm x 92mm Engera Bathroom Door Air Vent Grille Two Sided Ventilation Cover for Restroom, Warehouse, Storage Doors | Interior Door Transfer Grill 453mm x. 10 Wigford Road Masons Mill Pietermaritzburg Tel. Available lengths: 72, 97, 147, 197, 222, 247, 297, 347, 397, 447, 497, 547, 597, and 1000mm. , offering a complete line of air distribution and air terminal. For installation information not covered in this sheet, refer-ence appropriate damper basic installation instructions. #2 · Sep 12, 2012. Stainless Steel Door Grille with Single Flat Frame (Auxiliary Frame, Dual Core) The 9700 series transfer grilles are designed to ensure visual privacy while providing air circulation from one area to another. Model DG-FC Louvre Grilles are available in stock sizes and can. Catalog Pages . The LVH44 dampers can be assembled in multi-modules to protect large. Original plan was to take my central air return in the hallway and stub ducts in the attic to get individual air returns to each bedroom. Make your expertise uniquely valuable. Description. Cover Transfer Grilles. Compare. Favorite. Install the Pyroplex Fire. Series GECA-RC Removable Core Eggcrate Grilles. Such spaces include storage rooms and restrooms. O. A fire-rated version is also available. Lorient Intumescent Air Transfer Grilles are used to provide an answer to situations where ventilation is required in fire compartment walls or doors. Take a flow hood and check cfm with the door open and the door closed, with a 1" undercut on a bedroom door you will have a serious cfm drop. The negative pressure on that duct of your HVAC system will mess with the air distribution in weird (bad) ways, and it's almost certainly not big enough for what the dryer will be trying to pull. 001. We are ready to support all customer inquiries: Customer service: [email protected]. 2. Our intumescent grilles and fire dampers combine air movement with fire protection. The faceplates areFire and Smoke Resistant Dampers / Air Transfer Grilles System Benefits 3 Product Range 4 - 5 Operation 6 Lorient Smoke Control Systems 6 - 8 Product Solutions 9 - 18 - Doors 13 - 14. Horizontal and vertical moving slats for an individual regulation as they adapt the air range and the air stream to the needs of the zone. Volume flow rate range 4 – 535 l/s or 14 – 1926 m³/h. 4. We supply a range of Stainless Steel ventilation grilles, trickle vents, hit and miss vents. 2. Download catalogue. We are also able to custom fabricate products to suit your specific architectural requirements. Grille face made of aluminium with anodised finish. Shop everything from registers, vent covers, diffusers & more at the Home Depot. <br><br>The Perfect Balance In-Door Return Air Pathway is designed to maintain adequate air flow between rooms and eliminate pressure imbalancesallowing each room. James Gilbert & Son specialises in high quality decorative metalwork. Presto ! The grill vent covers require drilling a small hole in the alum for the screws. 005 150. e. 3. ft. This reduces noise and increases airflow. MSPG. Their special features make them ideal for placing in doorways and interior walls. Electrical conductor hinges are used for the concealed transfer of power from fire & smoke air transfer grilles into the door leaf. 1 Double Defl ection Grille AUR 6 1. The LVN20 is a non-vision intumescent air transfer grille. Uniclass Code : Pr_70_65_04_03. 2 Slimline Wall Grille ASG 11 1. Ventilation grille with angled blades. 6 SERIES GP Security Grilles 150 200 250 300 400 500 600 PIVOT LINE GRILLE HEIGHT - mm ALTERNATIVE SIZE FROM PIVOT 150 POINT 200 250 300 400 500 600 GRILLE WIDTH - mm 100 50 40 30 20 10 5 4 3 2. 001. Standard finish is natural anodised while other finishes including powder coat are available to suit the interior and architectural design requirements. With a dedicated design team working on both new developments and. Lancashire FY4 4QT. Begin by selecting a space over a doorway and measure the metal frame. A range of grille sizes can be produced from two modules of size 150mm by 150mm and 225mm by 112mm each 40mm thick. Ross MacGugan of Ernest Griffiths, explains: “Gilberts’ grilles and diffusers were the most suitable technically and aesthetically for the project. Every intumescent grille contains a moisture-resistant intumescent core held in a galvanised steel frame for security and long-lasting use. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. 1 Find Your Rep. Optional equipment and. Original plan was to take my central air return in the hallway and stub ducts in the attic to get individual air returns to each bedroom. Slim-profile, versatile intumescent block grilles for use in ceilings, doors, walls or ducting. 7" x 3. Transfer Grille Baffle. BBB Accredited Door and Gate Operating Devices near Victoria, BC. View Product. and is greater in size than transfer. ft. Mar 23 2021. From the family garage to 70,000 square feet today. Suitable for use in doors, O & MInstructions. Inverted V type grille bar for best vision proof quality and airflow. 002 0. NV3: Double layered grille intended for dark rooms (supplied as two modified NV1 grilles). Maximum size is 36" x 36" (914 x 914). If transfer grilles or jump ducts are used, refer to the balancing report provided by the HVAC contractor for the bedroom air flows to size the grilles or ducts. Gilberts NV Series provides a comprehensive and traditional range of vision proof grilles to suit all manner and type of air transfer application through doors, walls and partitions. . Door grilles provide visual security and limits light while allowing air transfer through doors or walls. We supply a range of Stainless Steel ventilation grilles, trickle vents, hit and miss vents. Suitable for use in doors, Modern Slavery Policy. heating and coolingTransfer Grille Size Calculator: Adjust the data in the blue boxes, press enter or click "Calculate" Door Undercut : Room CFM : Height : Width : Needed Transfer Grille Area: Jump Duct Diameter " by " 24. 30 mm wide front border. Door Furniture; Drawers and Drawer Runners; Eyes; Feet; Fixings Fasteners; Formed Section; Gastronorm Containers; Gates; Glass Canopy; Handles. NV6 is a Vision proof flanged grille suitable for surface mounting onto doors, wall or partitions. Typical Building Sector : Commercial,Dom. Favorite. AG30 Bar Grille. GRILLES AND REGISTERS F DOOR/TRANSFER GRILLES PERFORMANCE DATA: DOOR/TRANSFER GRILLES – 5100 AND 6100 SERIES MODELS: 51DG, 61DG Listed Duct Size (inches) Alternate Sizes (inches) Core Area (sq. Door Transfer Grilles. Over the years we have built a reputation for providing an extensive range of attractively styled, contemporary, value engineered products at the best in. The unit itself. 14" x 14" White Aluminum Transfer Door Grille w/ Frame (TGF Series) Compare. 1"x3. Static Pressure 100. NEWS. PERFORMANCE DATA STG Core Area (sq. Jet diffusers. Commercial Grilles, Registers and Diffusers. Download. They can be used for providing dampers in ductwork. Line the aperture with a 6mm hardwood liner. We are a manufacturer of Grilles, Diffusers and Louvres with a special emphasis in the fabrication and technical knowledge of Swirl Diffusers. AG10 Bar Grille. ) Nominal Size Core Velocity (fpm) 100 150 200 250 300 350 400 Velocity Pressure (in. Steel Maximum Security Transfer Grille with Rounded Perforations. 5 inches (38 mm) or the closet shall include a louvered door or transfer grille with a minimum net free area of 30 square inches (194 cm 2). Over the last 135 years we've produced architectural quality metal works for some of the biggest brands on the planet, yet we don't forget our. Colour : Buff,Silver,White. In many cases, pipes and ducts. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement diffusers, METALAIRE has the air devices to meet every need. Transfer Grilles offer the largest free area possible with the option of a sight-proof or light-proof core. Over the last 135 years we've produced architectural quality metal works for some of the biggest brands on the planet, yet we don't forget our. There are no doors - just an open stairway leading to the cold air return upstairs? I'm considering converting one of the transfer grille to a cold air return if needed - although hoping I don't need to do the extra work if not needed! Attachments. Air Ventilation Grilles, Fixed Blade & Adjustable Louvres, Ventilation Diffusers, Air Supply & Air Exhaust Valves, HVAC Grilles, Air Security Grilles, VAV & CAV Units, Radiant Panels and Trench Heating supplies from the industries leading manufacturer. 20 Patterson Brook Road – Suite #7 West Wareham, MA. The 9700 provides a single side mounting frame for use where appearance is an issue on only one side, as in a utility or storage closet. Designed for installation into fire resisting doors, walls and ducts. Using the same intumescent louvred slat. Aluminum Construction. Make your expertise uniquely valuable. Gilbert's Delicatessen, Guelph, Ontario. Individual grilles, grille bands, multiple grilles, and long throw nozzle grilles achieve different throw distances. Please note - A very. SG-PS. Home; Fan Finder;Non-vision air transfer grilles, made of aluminium, with fixed horizontal blades. Lorient LVH44 – 300 x 300mm Intumescent Grille. 4. , offering a complete line of air distribution and air terminal products. DESCRIPTION: Construction: Frame and blades are 6063 extruded aluminum alloy with 200-R1 satin anodized finish. The grill will be larger than you think, at least 18" square. 006 0. On the roof, 3 number penthouses, ranging from 1m x 1. They are available in a wide range of colours and finishes and are face fixed to walls or doors providing a cost-effective solution. In the event of an alarm condition, or power failure, the dampers shut, preventing the passage of cold smoke. This air transfer grille cover is suitable for both standard air transfer and fire rated applications. H Nominal grille heigh t. The Perfect Balance In-Door Return Air Pathway is a grille installed into the bottom. Quick Links. co. Transfer Grilles offer the largest free area possible with the option of a sight-proof or light-proof core. Cover grille (not included) Duct SERIES FB Door, Wall & Partition Mounting Intumescent Fire Dampers Gilberts FB Series provides a compact, eficient range of intumescent ire dampers designed to satisfy all types of air transfer application in ofices, shops, schools, hospitals and many other commercial projects. The performance data for all Gilberts products is derived using a Gilberts plenum design and specification. A transfer grille or grate is a panel or fitting with an opening allowing air or sound to move from one room to another. comDoor Grille TROX (South Africa) (Pty) Ltd. With minimum and maximum security options as well as a variety of mounting types, these grilles are suitable for supply and return applications. 1 KB Views: 234. Please note the existing silver finish will now be supplied in a new industry-standard satin silver finish of RAL 9006. Both the Halton TVC grille and opposite frame are screwed to the wall or door. We are the world's oldest manufacturer of decorative metal grilles. Alternatively, please contact TENMAT for details of suppliers of finished grilles complete with steel frame and steel faceplate louvres. com 0344 856 0590. HVC Supplies offer one of the widest ranges of grilles, diffusers, louvre systems, volume control dampers and fire dampers available from any UK manufacturer, with our range being constantly expanded to suit new industry requirements and customer demands. This is partly due to a privacy issue. recent projects include: Harrow Crown Courts Walton Prison (Segregation. Tamarack Technologies, Inc. Behind the scenes, numerous FB700 door transfer grilles and NV (non vision) were installed to maintain fire compartments, with FBL60 (one hour intumescent) fire blocks for optimum safety. XG-DG Series. TRH-A series grilles have a simple design which makes them useful for incorporation in all styles of architecture. SG-SD. 5 40mm 8mm Overall Size = List or Height + 57mm Overall Sizes = List + 67mm (+0/-1) 25mm Pitch 12. Because transfer grilles connect two rooms or a room and a hallway, there is nothing that is blocking sound between the two areas. Cam-Motion®. IMG_0186. Still family owned Gilberts operates from its 120,000 sq ft manufacturing base in Blackpool, Lancashire with an annual turnover in excess of £20 million. From standard grilles and registers, to its architectural line of Formations® linear slot diffusers, along with a newly released series of displacement. 54 KB: Preview: waterloo-air-products-plc_ns-non-vision-transfer-grilles_photo_1_a22cec27-d4cd-42c6-aff5-75aabd21432a. TYPE GPS3 & GPP3 -Air transfer grille arrangement comprising of a high security bolt fixing unit on one side and a lower security clutch screw unit on the other. Smoke, Fire and Volume Control. We are the world's oldest manufacturer of decorative metal grilles. Aluminum door return grille with sight-proof blades parallel to short dimension. The aluminium ‘V’ shape chevron blade mounted on a close 8mm pitch renders see through vision impossible and when double banked in a matt Grille Options & Accessories. . application in offices, shops, schools, hospitals and many<br />. For more friendly and professional advice on air grilles, please get in touch via our contact us page or give us a call on 01842 765657. The LVN20S provides a unique solution to the problem of containing both fire + smoke in emergency conditions yet offering good air transfer through doors in everyday use. 30 mm wide front border. Over the years we have built a reputation for providing an extensive range of attractively styled, contemporary, value engineered products at the best in. REQUEST A QUOTE . This grille features a 3/64” thick perforated face with 1/8” holes on staggered centers. Single Deflection grille with horizontal fixed vanes. Static Pressure 100. Heavy Duty Registers and Grilles. Submit a request online and get a quote from your local representative within 4 hours. Private conversations and loud noises can easily be. ATG. 005 150. Fire grilles look just like ordinary ventilation grilles, but can stop air from flowing into a fire by self-sealing as the temperature rises. A rater-measured pressure differential of ≥ -5 Pascals and ≤ +5 Pascals (0. Supplied in two pieces it lends itself to easy installation in a standard 54mm thick fire door, + when finished with a colour co-ordinated edge flange, results in an attractive but efficient air transfer feature. Presto ! Instant return ducts. Apply a bead of Pyroplex Intumescent Acrylic Sealant centrally and spread the acrylic across the full width of Timber liner, to achieve a thickness of 0. The face velocity through return grilles with 'V'core should not exceed 2m/s. . Integrated flow regulation damper. 033. Battic Door 20 Patterson Brook Road – Suite #7 West Wareham, MA. Sight-Proof Door Grille. The DV series are large format grilles for door ventilator applications. TheBareHandyman • 2 yr. 004 0. New Fire Resistant Door Hardware brochure. Maybe you can have transfer grilles installed to those rooms verse ducted returns. Air Transfer Grille Introduction Gilberts FB700 Series presents a range of Mild Steel Louvred Grilles designed to satisfy all types of air transfer application in offices, shops, schools, hospitals and many other commercial projects. Series GP Security Grilles. Construction is from all aluminium extrusion with fixed full chevron blades.