Intumescent Air Transfer Grilles - Fire Rated Vents - For 30 & 60 Minute Fire Doors

• A comprehensive range fire rated air transfer grilles designed for use in fire resisting doorsets and compartment walls.

• Tested for use on 30 minute FD30 and 60 minute FD60 fire rated doors.

• When dormant the grilles enable air to be circulated through out the building, in the event of a fire they are designed to close and restrict the flow of hot gases and fire.

• Grilles are of a modular and robust construction.

• The system is easy to install and maintenance free.

• The intumescent material is totally unaffected by water, robust, non-flaking and difficult to tear.

• The intumescent grilles are constructed from Zintec Mild Steel 0.65mm with matching clips.

• High volume of free air flow.

• Grilles can be stacked to create one off sizes.

• This product is for the intumescent grille only (the liner which is fitted inside the door).

• Faceplates are required to cover the hole and grille - sold separately please see related products or search for product 31209.

• Tested to BS476 part 20 / part 22:1987

• Suitable for use on 30 minute FD30 doors and 60 minute FD60 doors.

Installation Information:

• The installer must ensure that the doorset / door blank has been tested with an aperture to accept an air transfer grilles system for the required period of fire resistance. 

• Failure to comply with the requirements and instructions detailed in the specification of the doorset / door blank may invalidate the fire resistance of the fire resisting door assembly.

• Installation procedure: 

• 1. Cut the aperture in the door. 

• 2. Line the aperture with a 6mm hardwood liner. 

• 3. Apply a bead of Firestop intumescent acrylic sealant centrally and spread the sealant across the full width of timber liner, to achieve a thickness of 0.50mm.

• 4. Install the air transfer grille into the aperture. 

• 5. Secure the system into place using steel pins, not supplied. Alternatively, secure the system using self– tapping screws. 

• 6. Fit cover plates on both faces of the door - sold separately please see related products or search for product 31209.

Fixing Positions:

• As the test series included both positive and negative pressure tests it is considered that the proposed grilles may be installed within doorsets adhering to the following parameters. 

• The fire rated grilles shall be installed no closer than 150mm to the threshold and no higher than 1850mm.