16_1/2x21_5/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack cloning-&-seed-starting Blue output for healthy plant

Blue output for healthy plant growth and robustness

Find your perfect balance and enjoy a premium vaping experience with the Airis 8

Mother Earth Perlite is naturally occurring siliceous rock that expands up to 20 times its original volume when heated to 1600° F

It is designed for boosting phosphorus levels during all phases of plant growth

easy to clean

16_1/2x21_5/8x1 Exact MERV 12 Plus Carbon AC Furnace Filters 6 Pack cloning-&-seed-starting Blue output for healthy plantNordic Pure Custom MERV 12 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