16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack Water Pumps & Irrigation Supplies Suitable for dilution and mop

Suitable for dilution and mop mixes

The Hawkeye from TrolMaster provides an economical and accurate method to monitor an enclosed space

Transplanting & Dividing Plants: Drench newly potted or transplanted plants with a solution of 1 tsp

RAW Enzymes are uncut

65 and 280 bulk packs

16x20x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Pack Water Pumps & Irrigation Supplies Suitable for dilution and mopImportant 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. If you are replacing a 4 3 8 depth 16x20x4 filter