20x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Gardening Accessories Elastic top for snug

Elastic top for snug

Big Rootz is pH-adjusted and enriched with mycorrhizae to maximize root growth

top it with a 4” FloraCap® and you are ready to hand feed

5" bottom and 8" height

20x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Gardening Accessories Elastic top for snugNordic 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