21x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients Smoke & Water Detectors: Max

Smoke & Water Detectors: Max

Mother Nature has been evolving and perfecting her growing methods for over 450 million years

Warning & Toxicities:

Foliar Spray: Add 5-15ml/gallon of water

Par Value : 74

21x23_1/2x1 MERV 10 Plus Carbon AC Furnace Filters 6 Pack bloom nutrients Smoke & Water Detectors: MaxNordic 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