50 x Clear / Natural Brick Tunnel Weep Vents, Invisible Cavity Wall Water Outlet Extractor Fans & Vents 4 Inch / 100mm Ducting

4 Inch / 100mm Ducting

flush result—DIY-friendly

and finishing corners or edges

Can be used with concrete and traditional clay tiles

Brass anodised aluminium louvre air vent

50 x Clear / Natural Brick Tunnel Weep Vents, Invisible Cavity Wall Water Outlet Extractor Fans & Vents 4 Inch / 100mm DuctingClear Tunnel Weep Vents Pack of 50 Low profile invisible tunnel weep vents. Suitable for commercial and domestic use. Satisfies NHBC standards. British made manufactured to BS EN ISO 9001. Dimensions: 100mm x 64mm x 10mm. The product can be slotted between two bricks and mortared into position. It provides an unobtrusive ventilation point for the cavity behind. Other colours available in our shop. Use Any situation where water must be discharged from