17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar Reliable and easy to use

Reliable and easy to use

this formulation is ideal for a variety of growing uses and is designed to meet crop requirements for certified organic growers

Cleaning - Tweetmint is highly effective on grease and grime but is non-corrosive and will not harm surfaces

The ultimate handy solution for measuring conductivity

17_1/4x19_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack LUXX Bar Reliable and easy to useNordic 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