SIZE: AirLiner sleeve: 220mm W x 71mm H, extends from 250mm to 368mm L (including air brick) (see image gallery). Hit & Miss grille: 271mm L x 95mm H.
EQUIVALENT AREA: 10,200mm² (102cm²) per set (tested to BS EN 13141-1:2004 and independently verified by the BRE).
Internal hit & miss grille manually adjusted with a sliding action allowing ventilation to be controlled as required. Telescopic cavity liner contains an internal baffle to reduce light and draughts.
External water baffles prevent transfer of water across the cavity. Air brick and hit & miss grille U.V. stabilised to slow down the effects of sunlight.
Telescopic cavity liner contains an internal baffle to reduce light and draughts.
10,200mm² (102cm²) per set (tested to BS EN 13141-1:2004 and independently verified by the BRE).
Hit & Miss grille: 271mm L x 95mm H.