21x21x1 Exact MERV 8 AC Furnace Filters 6 Pack Aeromixer The EC/TDS conversion factor is

The EC/TDS conversion factor is user-selectable as well as the temperature compensation coefficient (

This solid design includes valve

• 55-gallon distribution reservoir with drilled lid and lock

DIMENSIONS: ø 16

21x21x1 Exact MERV 8 AC Furnace Filters 6 Pack Aeromixer The EC/TDS conversion factor isNordic Pure MERV 8 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 8 furnace filters are comparable to HVAC filters with the rating of MPR 800. While different companies use different scales to measure the air filters