Want to use a pet door as garage vent. Answered
I am a renter and have a 2 car garage with a pet door in between. The garage stays pretty hot even with a fan running. I needed to vent some of this hot air. I thought I could take a box fan and design some sort of ducting to allow the hot air to be sucked out and cooler air in and also prevent the pets from escaping. I figured I could remove the plastic grill and attaching the duct to the screw holes left from the grill removal. Not so great with geometry but needed to slope the duct box doen to the rectangular shape of the pet door.