6x20x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack rockwool Full spectrum white and 660nm

Full spectrum white and 660nm red

Citrus Red Scale (aka California Red Scale

B'Cuzz Blossom Builder Tabzz are packed light-tight

5 inches deep

6x20x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack rockwool Full spectrum white and 660nmNordic 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