The Ventilation Maximum sloped roof exhaust trap is mounted onto the roof to allow the discharge of washroom fans, kitchen hood ranges, air exchangers and clothes dryers. It is made with galvanised steel, painted in brown with powder baked polyester. It features a built-in damper, a storm proof deflector shield, a removable galvanised screen mesh and is backdraft proof. The sloped roof exhaust trap features a built-in 4 in. round diameter pipe and adapts to roof slopes ranging from 2 /12 to 15/12.