16x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Bio-Fertilizer • Accepts sodium or halide

• Accepts sodium or halide bulbs

Minimizes the need to transplant

Contains: 1 Grow (1000gr)

houseplants

warehousing

16x20x4 (3 5/8) Pleated MERV 15 Air Filters 1 Pack Bio-Fertilizer • Accepts sodium or halideImportant 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