16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 4 Pack Reflectors & Grow Lights Performance of combustion chamber¹: 46

Performance of combustion chamber¹: 46 kW / 61

These pH testers work with Oakton's line of 10

Bermudagrass Mites

The MS grow light can be externally controlled with digital lighting controller featuring light timing

Comes with protective case and calibration solution

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 4 Pack Reflectors & Grow Lights Performance of combustion chamber¹: 46Important 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. We also carry 4 7 8 and 5 1 4 inch depth filters,