20x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack nutrient-combo This high-PFF MH lamp delivers

This high-PFF MH lamp delivers optimized full spectrum plant biologically active radiation

A welcome second advantage is that you can not make any mistake anymore with the positioning of the drippers in the block

Inrush Current

The DTU (Data Transfer Unit) is programmed by a smart phone or table APP via Bluetooth or Wi-Fi

Mealybug (Pseudococcus sp)

20x20x4 (3 5/8) Pleated MERV 14 Air Filters 1 Pack nutrient-combo This high-PFF MH lamp deliversImportant 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 20x20x4 filter