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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2
Perfect for greenhouses and larger commercial spaces
Experience the power of a ballast straight out of Hydrofarm’s value line
Increases resistance to environmental stress
Nema 5-15P Plug
and calcium directly to plant roots
16x20x4 (3 5/8) Pleated MERV 12 Air Filters 6 Pack commercial-lighting-fixture Perfect for greenhouses and largerImportant 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
