13x21_3/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Meters & Solutions Dimensions: equivalent openings to 22”

Dimensions: equivalent openings to 22” round on the inlet and outlet

• Apply as a standalone with water or tank mix with other nutrients

Each coverall is individually packaged and sterilized to a 10⁻⁶ sterility assurance level (SAL) preventing workplace contamination and cross-contamination of products or materials

We've increase the standard 1150W output to 1200W

At the heart of this system is the new and improved PHB4015 Phantom Commercial DE Ballast with USB Interface

13x21_3/4x1 Exact MERV 7 Plus Carbon AC Furnace Filters 6 Pack Meters & Solutions Dimensions: equivalent openings to 22”Nordic 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