Push Fit Air Admittance Valve Arch Boards For use in external applications

For use in external applications such as cladding

The lower TPI count of 4 teeth per inch will result in a rougher cut which is suited to framing carpentry and non-visible woodwork

Can be used for roof ventilation at high or low level

Designed to provide a neat

Uni-line slate grey vent is an in-line ventilation slate to suit both 600 mm x 300 mm (24" x 12") and 500 mm x 250 mm (20" x 10") double-lap slates

Push Fit Air Admittance Valve Arch Boards For use in external applicationsSometimes known as a 'Dirgo' this is usually used at the terminal of a soil stack For internal use only, this allows for the ventilation of a pipe run (to relieve negative pressure) without letting odours escape