Witten Replacement Automatic Vent Threshold Both options come fitted with

Both options come fitted with a resilient DuraSoft® handle and integral finger guard for increased comfort and reduced fatigue during use

Easy plug on design reduces installation time and cost

wire strippers

Easy adjust pivot bolt allows quick and easy adjustment to fine tune cutting blade tension for optimal cutting performance

40 DWV pipe

Witten Replacement Automatic Vent Threshold Both options come fitted withNo mortar required for installation Easy installation method tighten 4 screws Bi metal coil design allows aluminum louvers to open and close automatically Louvers fully open at 75 and fully closed at 35 Net free air 68 square inches Materials Perma coated screen molded into vent