20x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pest control Oxygen & Humidity Layers:​​​​​​​Together

Oxygen & Humidity Layers:​​​​​​​Together

A removable and adjustable shoulder strap provides even more comfort and convenience

6% Humic Acid

This blend provides essential nutrients to all plants

20x28x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack pest control Oxygen & Humidity Layers:​​​​​​​TogetherNordic 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