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.