16_1/4x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack LED Fixed length

Fixed length

SunBlaster Mini Greenhouse Kits have been the starting point for many of today's Modern Growers

sturdiness

Three different non-linear EC-to-TDS conversion factors (KCl

16_1/4x21_1/2x1 Exact MERV 10 Plus Carbon AC Furnace Filters 6 Pack LED Fixed lengthNordic Pure Custom MERV 10 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