20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 1 Pack vacuum Once up to three times

Once up to three times a week

For those pesky annuals

TIP OVER switch shuts off gas source if the unit falls or tips over

Thanks to its simple

Like Grow A and Grow B

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 1 Pack vacuum Once up to three timesImportant Note: Almost ALL furnace filters have a different "actual size" than the nominal size printed on the air conditioner filter. It's best if you measure your air filter for the EXACT size and compare it to our "Actual Size" and then you can be sure your A C air filter fits! With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer. We also carry 4 7 8 and 5 1 4 inch depth filters,