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dim and boost multiple (USB-compatible) Hydrofarm ballasts at once-up to 256 in each of two independent zones for a total capacity of 512 ballasts
And the result is a better harvest
a pre-set regulator
Debug ON offers multiple actions in a single application – as a first-class insecticide
Bug Buster-O controls more than 100 insect pests
20x25x4 (3 5/8) Furnace Air Filters MERV 12 Pleated Plus Carbon 2 Packs commercial-lighting-fixtures dim and boost multiple (USB-compatible)Important 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 20x25x4 filter