These ball and socket air vents are injection molded T grade ABS. The vent orifice is 1" diameter, and the ball swivels 45°. The mounting flange is 2-1/8" square, and the distance between mounting hold centers is 1- 11/16". Mounts in 1.75" diameter hole & uses 1-3/4" ducting.
There is no aircraft specific application chart available for these eyeball vents. Please use the following dimensions to verify it will work in your application: MOUNTS IN 1-3/4" DIAMETER HOLE, MOUNTING FLANGE 2-1/8" SQUARE, MOUNTING HOLE DISTANCE BETWEEN CENTERS 1-11/16", VENT ORIFICE 1" DIAMETER.
Q: Do these vents completely close such that the vent airflow is stopped? I currently have aluminum vents and they leak.
Per the supplieR: Our plastic ball & socket air vent will leak a slight amount of air due to the clearance required for the "door" to function properly. (About .010" of an inch)