I have a package HVAC system that requires a plenum box, would these be good with it?
Yes, they would be good with it, the trim-to-fit knockdown plenum fully assembled measures 16.5 in. W x 20 in. D x 36 in. H. and is designed for use with 17.5" wide furnaces. The knock-down design of the plenum takes up very little space and simplifies transporting to the job site. This knockdown plenum is designed to be used with multiple different brands and comes with 4 trimable side and 1 trimable top. If you have any further questions please feel free to give us a call! Thanks.