16_1/4x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Lighting & Electrical Components helping prevent contaminants from entering

helping prevent contaminants from entering or seeping through exposed seams

KALIX Enzymes are suitable for use in conjunction with all nutrient and feeding programs

and profits stay high

Using as a Concentrate Vaporizer

ISO 9002 Certified

16_1/4x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack Lighting & Electrical Components helping prevent contaminants from enteringNordic Pure Custom MERV 10 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