Witten Replacement Automatic Vent Size:16" wide x 8" high Any changes made to the

Any changes made to the pre-set pressure is entirely at the risk of the person(s) / company who make the adjustment

Designed for use on doors up to 450 lb

and reducer couplings manufactured from durable PVC and Styrene

When the brass road is threaded into both the float and threaded into the fill valve

Witten Replacement Automatic Vent Size:16" wide x 8" high Any changes made to theNo 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