AIR DUCT VALVE (THREADED)

Stop valve designed to work in conjunction with any 3" piping, hose or duct inlet/outlets. This valve allows you to vent without exposure to outside air/critters when the fan is not in use. For the updated quick release variant see:'Quick Release' variant update:The new version of this model has been completely redesigned to eliminate the threaded stem in order to provide a simplified user experience with numerous additional updates and refinements including reduced support requirements, as well as updated geometry and tolerance refinements. As a result, I highly recommend printing the quick release variant over the threaded variant. Specs:Outlet (male): 2.9" ODInlet (female): 3" ID Assembly:Simply Insert the valve disk through the inlet end of the valve housing, and screw the stem/handle onto the valve disk. Disk and Stem feature an aligned hole. You can use a toothpick, or a similarly sized object in order to lock the disk in place in order to avoid unwanted rotat