17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack growing-media Directions for use

Directions for use

There are several advantages to using concentrated liquid dips over powders and gels

Add additional sensors to the ILUMINAR HASH System in Seconds

Specifically oversized by 3/8 in to fit any application

67 x PotPro™ | Link x 1ft (unit)

17_1/4x19_1/4x1 Exact MERV 13 Plus Carbon AC Furnace Filters 6 Pack growing-media Directions for useNordic 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