16x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions European-made VS K12 x 30s

European-made VS K12 x 30s high temperature lamp holders

cabbage loopers

We offer live tech support 12 hours a day

Temperature Sensors: 2 (for two rooms 12/12)

16x21_1/2x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack ph-ec-tds-meters-and-solutions European-made VS K12 x 30sNordic 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