Glider Vent Naca duct insert

Glider canopy vent insert naca duct, fits an HP-18 opening 129mm x 88.9mm

Designed to snap into the window opening on the canopy. Should make more air than a small scoop. The build is four parts total, two pins, one cover, and the main body. Install the pins in the front keepers, put a small spring between them to push the pins out, then install the cover over the spring to keep it in place. See illustrated picture