17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Grow Strong We keep prices on the

We keep prices on the Xtrasun line low to ensure that there’s a ballast for everyone

As a result

We have designed a formulation of oils to cause rapid evaporation using our innovative proprietary process

• Approved under Washington State Department of Agriculture Organic Food Program for use in organic production

17x29x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Grow Strong We keep prices on theNordic 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