15x9x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack LUXX 200W BAR HIGHLY-CONCENTRATED FORMULA: With a concentration

HIGHLY-CONCENTRATED FORMULA: With a concentration of 900 propagules per gram

calibration solution and a one year warranty (one year from date of shipment)

HI70004G is a high quality pH 4

or a lighting controller such as the APT0082

15x9x1 MERV 12 Plus Carbon AC Furnace Filters 6 Pack LUXX 200W BAR HIGHLY-CONCENTRATED FORMULA: With a concentrationNordic 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