11x32_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification Due to the well-aerated nature

Due to the well-aerated nature of Kings Mix

Stonington Blend is a rich mixture of horticultural grade sphagnum peat

Can be used in any Growing Media

This very strong

Phytophthora and Downy Mildew

11x32_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack AC / Dehumidification / Humidification Due to the well-aerated natureNordic 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