21_1/2x23_3/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack dupe Cabinet insulation: ½" EPS

Cabinet insulation: ½" EPS

Full Spectrum White and 660nm Red

the other side reflective material

Expand & Plant Organic Cube with Nutrients

for a little goes a long way and too much can be non-beneficial

21_1/2x23_3/8x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack dupe Cabinet insulation: ½" EPSNordic 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