17x26x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom One perfect for 2x2ft grow

One perfect for 2x2ft grow tent and four for 4x4ft grow box

Pure is environmentally friendly

Drench or mist your plants for an explosion of new root growth

Eliminator’s proprietary formula is made in handcrafted batches to ensure maximum quality control

17x26x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack rock-bottom One perfect for 2x2ft growNordic Pure Custom MERV 14 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