Size options measuring between 100mm and 300mm may be ordered from this product page. Additional sizes available. Affordable high-quality air transfer plate. Suited for a wide variety of indoor environments including schools, hospitals, offices, shops and other commercial settings. Constructed of 20swg mild steel with horizontal louvers set at an 8.5mm pitch with a 30% downward directional deflection. A suitable selection for both door and wall installation. Self-tapping screws included for flange screw fixing. Steel construction meets requirements for standard air transfer applications, with or without fire grille. A vast range of 55 sizes from 100mm x 100mm up to 600mm x 600mm. NHBC type approval.
Please Note: The size stated is for the grille it is designed to cover and not the actual size, and therefore these are larger with a 25mm frame.