For those who thought they could only use 1" filters
I never thought I could use a 5&#34; media filter being as our supply was only framed for a 1&#34;, but this works great. As long as your supply doesn't make a sharp turn or get significantly smaller within the first 5&#34; of your run, these work great. The first box I received got smashed when the UPS driver laid it on its side and then put a much heavier box on top of it, but the company was fantastic about sending out a replacement right away. I sent in pictures of the damage and they sent out new ones that same day. Love how much cleaner it makes the air without stressing out the fan on the a/c unit.
Rating: 5 stars