These high quality carburetor heat boxes are available for most common Lycoming & Continental engines. Not FAA approved. For Lycoming 0-320 series.
What is the size of the cut we should prepare on the lower cowling for fixing this air box?
It would be best to have the unit to make any final cutting, but the mounting flange is approx. 5" x 5-1/2". It uses a Brackett BA4106 air filter, or similar size unit.