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Ships within 48 hours · Estimated delivery Sep 9 - Sep 14
High accuracy
fit the Circulator into the center holes
Enzymes (protease & cellulase)
GROW1 Lowride Flood Trays are available in three sizes to suit a wide range of hydroponic applications and grow substrates
European-made VS K12 x 30S high temperature lamp holders
16x20x4 (3 5/8) Pure Carbon Pleated Odor Reduction Merv 8 Furnace Filters 2 Pack soil nutruient High accuracyImportant 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