26x30x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack hawthorne Compatible with all growing mediums

Compatible with all growing mediums & systems

HPS/MH Replacement - 1000W

Cubic Feet CO2 Per Hour: 6 - 27

and backup memory

26x30x1 MERV 7 Plus Carbon AC Furnace Filters 6 Pack hawthorne Compatible with all growing mediumsNordic 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