50 x Clear / Natural Brick Tunnel Weep Vents, Invisible Cavity Wall Water Outlet Roofing 5 x 9mm ( 3/8

5  x    9mm            ( 3/8 inch )5  x  13mm            ( 1/2 inch )5  x  19mm            ( 3/4 inch )5  x  25mm               ( 1 inch )5  x  32mm         ( 1 1/4 inch ) Measurement is the tool hole size

6 x 5/8" - Qty 60

This baffle reduces the airflow and also the feel of a draught through the vent

Suitable for ceilings and walls

Galvanised steel

50 x Clear / Natural Brick Tunnel Weep Vents, Invisible Cavity Wall Water Outlet Roofing 5 x 9mm ( 3/8Clear 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