Anybody know what size filter this is?
Hmmm, even the Aprilaire site doesn’t say.
Says it for their special system though.
EASY AS 1-2-3 TO INSTALL in the unique Aprilaire Interlock Rail System. Unpack. Slide in. Close the door. Done.
Anybody know what size filter this is?
Hmmm, even the Aprilaire site doesn’t say.
Says it for their special system though.
EASY AS 1-2-3 TO INSTALL in the unique Aprilaire Interlock Rail System. Unpack. Slide in. Close the door. Done.