This is a 2" Naca Duct made from carbon fiber composite. The Opening is 2" wide, and 4 5/8" Long with a 11/16" Flange around the Opening.

This is a 3" Naca Duct made from carbon fiber composite. The opening is 3" wide and 6 7/16" Long with a 11/16" Flange around the opening.

This is a 4" Naca Duct made from carbon fiber composite. The Opeining is 4" wide and 8 3/4" long with a 3/4" Flange around the opeining.

Aluminum fuel door kit