23x25x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack new releases Simplifies Design Layout Reduces system

Simplifies Design Layout Reduces system costs

The mats heat compressed to ensure compactness and consistent finish

Use reverse osmosis water or water under 200 ppm (avoid chlorinated water)

over rolling benches or even in tents

pls adjust the height and brightness of the grow lamp appropriately

23x25x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack new releases Simplifies Design Layout Reduces systemNordic 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