25x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_fluence Longevity—90% PAR output at 8

Longevity—90% PAR output at 8

Programming features two thermal trigger modes and four speed control options

Supplementing calcium and magnesium is one of the secrets of expert growers and results in more vigorous plants and larger yields

Note: The LightRail 5 Auxiliary Rail does not have rail alignment pins and does not need them because travel across the seam will not be necessary

Each bag weighs 17

25x30x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack spl_fluence Longevity—90% PAR output at 8Nordic Pure Custom MERV 12 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