16x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 1 Pack X Nutrients Grow Spray 1 Gal Precision German glass filter lens

Precision German glass filter lens with our patent pending Rendition Perfect Color HPS technology

cleanable sediment

Begin using TundraTM at the onset of the flowering cycle and continue use through the flowering/fruiting stage

Electrical Port Quantity 8 (3"

5 hours of charge time

16x20x4 (3 5/8) Pleated Air Filters MERV 7 Plus Carbon 1 Pack X Nutrients Grow Spray 1 Gal Precision German glass filter lensImportant 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