23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro 2 speed settings

2 speed settings

Adjustment Range 3

Bag of dry compressed wafers of worm castings and coco coir

Special UV-resistant composition

Delivering an average of 295 µmol/m2/s over a 2’4’ area

23_1/4x29_1/4x1 Exact MERV 14 Plus Carbon AC Furnace Filters 6 Pack spl_centurionpro 2 speed settingsNordic 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