I am searching for a NACA duct for a non-RV for cabin air. Looking at Spruce the ones they sell have horrible reviews about being made with cheap flimsy clear plastic. Looking at race car web sites seems they sell big ducts that won't fit and small ducts for cooling brakes that are too small.
Checked the Vans web site and they sell a VENT SV-1 which may be jsut what I am looking for, but I don't see dimensions and the price seems unbeliveably low at $6.25 when the others I look at cost much more.
https://shop.vansaircraft.com/cgi-bin/shop.cgi?browse=heatvent&product=ventilation-components
Can anyone confirm roughly the size of this vent and is this the only NACA duct that Vans sells?
Checked the Vans web site and they sell a VENT SV-1 which may be jsut what I am looking for, but I don't see dimensions and the price seems unbeliveably low at $6.25 when the others I look at cost much more.
https://shop.vansaircraft.com/cgi-bin/shop.cgi?browse=heatvent&product=ventilation-components
Can anyone confirm roughly the size of this vent and is this the only NACA duct that Vans sells?