16_1/2x22x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hf Allows evaporative cooling in hot

Allows evaporative cooling in hot climates & provides thermal insulation in cold climates

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Fungus Gnats (Bradysia coprophila

This 3-in-1 tester is unmatched in EC/TDS/ temperature measurements

Silicator delivers an absorbable form of silica directly to your plants

16_1/2x22x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hf Allows evaporative cooling in hotNordic Pure Custom MERV 7 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