16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 2 Pack led • Built-in defrost system engages

• Built-in defrost system engages at 32°F

and can be used indoors and outdoors from start until harvest

000 ppm CO2 is critical to the proper operation and safety of an emergency CO2 system like the Carbon-X

Mix 1/4 - 1/2 tsp

and pathogens through our proprietary “Adsorptive Neutralization” process

16x25x5 (4 3/8) Honeywell/Lennox Replacement Air Filters MERV 8 Pleated Plus Carbon 2 Pack led • Built-in defrost system engagesImportant 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,