21x23_1/2x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements right out of the gate

right out of the gate users can begin supplementing with fertilizers

• Wall or ceiling mounting at any angle with installation brackets supplied as a standard

its own specific properties

84 x FloraCap® 2

21x23_1/2x1 MERV 13 Plus Carbon AC Furnace Filters 6 Pack nutrients and supplements right out of the gateNordic 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