Invisiweep Vent Extension Pipe - 500mm

Integral 4mm vermin barrier and rainwater baffle as recommended by BS5250, to reduce ingress of large nest building insects, mammals and rainwater penetration to the cavity
Externals ribs & tapered profile, to key into mortar for secured fixing
Full height upstand to cavity side, to maintain drainage and minimise the impact on blockage from cavity cement builds
Discrete water outlet, to minimise the impact and reduce visibility for a truly concealed wall weep
Venturi effect outlet tube to reduce pressure, allowing for optimal water drainage
Extension tube available for wide walls and render.