21_1/4x21_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack propagation trays Temperature Range: 0-59

Temperature Range:                             0-59

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Blue Mamba Extra 7mil Nitrile Medium - Case of 10 boxes (100 per box)

Supported by a rear hinge

Suggested Uses: Use as a fungicide to control Powdery Mildew on plants

21_1/4x21_1/4x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack propagation trays Temperature Range: 0-59Nordic 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