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Turn on water and allow a brief flush (30–60 seconds) before first use to prime the filter media
Deep Reflector included
000 "uses" in 100g of Chlor a’ Clean
HB1500 Full Spectrum Led Grow Lamp including high efficient horticultural LM301H plus Red
• Light cycle extension to induce flowering of long-day plants
16x20x4 (3 5/8) Pleated MERV 13 Air Filters 2 Pack Extension Turn on water and allowImportant 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
