15x18x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw Increase frequency during periods of

Increase frequency during periods of high pest pressure or rapid plant growth

Matched high quality motors and blades for maximum efficiency

and that’s no bueno

Enables uniform and faster growth

Bearing with Cover for XL Trimmer

15x18x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack spl_hw Increase frequency during periods ofNordic Pure Custom MERV 7 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