Rytons A1 Fire Rated Metal Rytweep Cavity Weep Vent – Box Of 50

Concealed Cavity Weep Hole Duct Diecast In A1 Fire-rated Metal With A Two Part Electroplated Coating. A Pre-formed Component Which Allows The Cavity Can Drain Freely Without Obstruction Quickly And Easily Positioned As Brickwork Proceeds And Virtually Invisible In Mortar Suitable for a) the external walls of buildings more than 11m high where people sleep on the premises (residential, institutional or hospitality) or b) external wall surfaces within 1m of the boundary if the building is 11m high or less, in England.