Defrost vents designed to fit in AA series Grumman airplanes and can also be used in Experimentals. They will fit the original hole pattern on the Grummans, but the area where the scat tube is attached has been changed to a full round 1 ½ dia.
This one piece hard plastic air vent is totally self contained. A standard 1-1/2" scat duct easily slides onto the angled attach point and a simple squeeze of your fingers and it is locked on securely! It easily attaches to any glare shield or side panel totally hidden with 632 machine scre