What size air filter for RXHF-17? [SOLVED]
Question. What size air filter does the RXHF-17 use?
Protech RXHF-17 External Filter Rack, 17″
Answer. The proper filter dimensions are 16x20x2. I recommend a filter Made in the USA with at least a MERV 8 rating. Here is a filter pack (USA made, Merv 8, 6 pack) that I have had good success with. I hope this info helps!