11x32_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack HPS Apply directly to actively growing

Apply directly to actively growing weeds during warm

OMRI listed for organic use

Spray the entire plant with the lights off

NEMA 6-15 UL-listed power outlets

removes lint

11x32_1/2x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack HPS Apply directly to actively growingNordic Pure Custom MERV 13 Plus Carbon air filters are made based on the actual measurements so be sure to measure your current filter to get the EXACT dimensions before ordering. As with all Nordic Pure filters, the effective life of your filter depends on the environment in which you live. We recommend changing 1 and 2 filters every 30 90 days. Our 4, 5 and 6 inch thick filters could last up to 6 months. EXACT MEASUREMENT: Furnace and air condition