16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 1 Pack Water Filtration and help shield plant roots

and help shield plant roots from pathogens and disease

Thin linear top light design minimizes sun interference in greenhouses while providing better canopy access when applied indoors

Perlite and Dolomite Limestone (pH adjuster)

and flat screw heads

16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 8 Air Filters 1 Pack Water Filtration and help shield plant rootsImportant 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,