20x26x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems Think of SNS 311 as

Think of SNS 311 as immediate medicine for your plants (or a first aid kit)

• Freezer-to-Cooking safe

7 x Matrix Circulator | 2 1/4"

Pentane is a highly non-polar

Sesame oil

20x26x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack Hydro Systems Think of SNS 311 asNordic 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