20x22_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack -monitors-&-timers Easy-to-use liquid formulation makes measuring

Easy-to-use liquid formulation makes measuring and mixing a breeze

This line of time-tested activated carbon air filters sets the standard for long life

israelensis to kill mosquito and fungus gnat larvae before they mature into breeding adults

Twister T4 Crossbar Assembly

This organic liquid has a well-balanced NPK of 2-3-1 to give you a complete fertilization profile

20x22_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack -monitors-&-timers Easy-to-use liquid formulation makes measuringNordic Pure Custom MERV 14 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