17x29x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack DUCTWORK Week 7-8 – 10-12ml per

Week 7-8 – 10-12ml per gallon

Correctly manipulates input power sine wave for type of motors being controlled

The beneficial bacteria in ScentGuard help break down compounds that produce unpleasant odors through microbial digestion of ammonia

or any other growing media

Fully compatible with IPM programs

17x29x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack DUCTWORK Week 7-8 – 10-12ml perNordic Pure Custom MERV 13 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