16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack spl_dlw one or two points with

one or two points with three standard buffers available (pH 4

When germinating seeds

Extendable intake and exhaust hoses (up to 6')

Incorporating TerraVesco Vermicompost results in enhanced root mass

Enables maximum airflow passthrough for both intake and exhaust configurations

16x20x5 (4 3/8) Honeywell/Lennox Replacement MERV 12 Air Filters 2 Pack spl_dlw one or two points withImportant 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,