8x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack complete-systems 14% drier than competitor blocks

14% drier than competitor blocks

An Xtrasun convertible ballast means extra flexibility for your gardening

SEACAL is a blend of calcium (needed for cell growth)

White Lightning provides the following benefits

Premium 95% European aluminum

8x28x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack complete-systems 14% drier than competitor blocksNordic 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