20_1/2x25_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments Universal outlets will accept either

Universal outlets will accept either 120 V or 240 V power cords

0 to 95% non-condensing

Use Bio Green Clean to leave your entire growing areas spotless and looking brand new

and CO2 in the growing area

Will not harm microbial populations

20_1/2x25_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack timers-and-instruments Universal outlets will accept eitherNordic 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