Square and rectangular shapes. Suited for 30 minute or 60 minute fire rating applications. High quality construction. Galvanized steel frame and moisture-resistant intumescent core. 6mm steel mesh on both faces for vermin deterrence. Each unit includes two air transfer plates and one grille. Maximum single grille area dimension is 600mm².
Multiple grilles may be combined to achieve coverage for an area up to 1500mm x 1000mm. Depth of grille is 42mm. May be mounted up to 1 metre from the level of the floor. A complete selection of size options is available ranging from 100mm x 100mm up to 600mm x 600mm. Meets testing compliance for BS476 Part 22: 1987 and EN 1634-1.