16x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack bloom nutrients Unique squeeze-to-open handle with spring-loaded

Unique squeeze-to-open handle with spring-loaded locking catch opens automatically when handles are pressed together

Uvonair 11" Replacement UV Bulb for Uvonair 1000 Standard (item code OEUVA100)

RDWC and Other Recirculating Hydroponics Systems:

Apply using a pump sprayer

Key Features

16x20x4 (3 5/8) Pleated MERV 8 Air Filters 1 Pack bloom nutrients Unique squeeze-to-open handle with spring-loadedImportant 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