20x25x4 (3 5/8) Pleated MERV 12 Air Filters 2 Pack cloning-and-seed-starting You should soon see improved

You should soon see improved yields and reduced nitrates among your fruit trees and faster rooting and more brilliantly colored foliage and blooms for your ornamentals

The reflector’s interior is 95% European hammertone aluminum and offers excellent uniformity and diffusion

Or up to 1 hour

Field Crops

- Phosphorus – is a driver of ATP synthesis

20x25x4 (3 5/8) Pleated MERV 12 Air Filters 2 Pack cloning-and-seed-starting You should soon see improvedImportant 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