Suited for 30-minute or 60-minute fire rating applications. High-quality construction. Galvanised 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. The maximum single grille area dimension is 600mm². Multiple grilles may be combined to achieve coverage for an area up to 1500mm x 1000mm. The depth of the 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.