Push Fit Air Admittance Valve Arch Boards Uni-line slate grey vent is

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

Cover can be turned to match direction of paving

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

Square cover to suit 300 mm Clark Drain access chamber

Cushioned handles

Push Fit Air Admittance Valve Arch Boards Uni-line slate grey vent isSometimes 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