20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Liquid & Weight Measuring EthylBloc™ is a trademark of

EthylBloc™ is a trademark of AgroFresh Inc

The internal layer is made of heavy-duty dual aluminum foil that is fire/flame resistant

Left coast Wholesale offers additional accessories from Harvest More including a 220-micron screen that is an interchangeable option for users who want to collect larger plant matter particles

FloraFlexTM Logo printed on the tubing

20x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 13 Air Filters 4 Pack Liquid & Weight Measuring EthylBloc™ is a trademark ofImportant 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,