These ball and socket air vents are injection molded T grade ABS. The vent orifice is 1" dia., 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" dia. hole & uses 1-3/4" ducting.
Airframe Parts - Vents - Eyeball Vents
