20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 2 Pack spl_hgc The output range of 10%

The output range of 10% to 115% gives you fine-tuned dimming capability that most basic timers and controllers simply can't match

The included smart controller features advanced programming and functions that give you full control over the rack cabinet’s cooling

Chlor a’ Clean helps sustain a rich growing environment for plants by neutralizing the buildup of Chloramine and Chlorine

Use KALIX Nitrogen to optimize nitrogen levels during all phases of plant growth

Designed to be mounted into any standard 19-inch rack to provide a secure storage space

20x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 10 Pleated Plus Carbon 2 Pack spl_hgc The output range of 10%Important 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,