14_1/2x27_1/2x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LED From the household hobbyist to

From the household hobbyist to the commercial level grower

For more detailed information on applications with specific types of equipment

voted High Times Magazine product of the year for three years running

The EYE HORTILUX LED 240-R utilizes the spectrum that far outperformed all others

2 RAW Nitrogen - 8 oz

14_1/2x27_1/2x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack LED From the household hobbyist toNordic Pure Custom MERV 13 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