21x21x1 MERV 7 AC Furnace Filters 6 Pack Trimming Shears Performance of combustion chamber¹: 23

Performance of combustion chamber¹: 23 kW / 30

Frequency : 50/60HZ

Overall the knife measures 9-inches

The small and precise flow of the MP810 provides fully automated pH control of aqueous solutions in the hydroponic systems

21x21x1 MERV 7 AC Furnace Filters 6 Pack Trimming Shears Performance of combustion chamber¹: 23Nordic Pure MERV 7 Pleated AC Furnace Air Filters provide exceptional filtration for both home and commercial environments. Each time air passes through a Nordic Pure pleated furnace air filter, lint, dust, pollen, bacteria, pet dander, dust mites, mold spores and other contaminants are removed. MERV 7 furnace filters are comparable to HVAC filters with the rating of MPR 600. While different companies use different scales to measure the air filters