Well made, fits older model C-172s

The surface where the air filter is to attach to the box is not straight. It has a bow in it. It will require modification to be useable. Considered sending it back but was afraid I would get a worse one as a replacement.

Nice looking heat box but...... When you lay the box on a table with the air filter bracket side down on the flat surface if the table, you see that that surface is not straight. It has a bow in it. You can see daylight of about 1/8 inch on two corners. I considered sending the damned thing back but then thought that another one might be worse. I will have to pay my sheet metal man an hour or two of wages to retify this problem.