16_3/8x21_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Drying Racks Included fittings: 1

Included fittings: 1

using a light fertilizer solution if desired

when the first buds are beginning to form

Balanced spectrum

16_3/8x21_3/8x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Drying Racks Included fittings: 1Nordic 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