The first digit indicates the number of tubes (5 = 5-tube unit)
Inert Ingredients: Reverse Osmosis Water
please refer to the manufacturer's label under the MSDS tab
easy to operate system
Breaks down scale - Keeps irrigation systems in pristine condition
17_1/8x26_1/2x1 MERV 13 AC Furnace Filters 6 Pack ventilation The first digit indicates theNordic Pure MERV 13 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, smoke particles, virus carriers, coughs and sneezes, smog, allergens and other contaminants are removed. MERV 13 furnace filters are comparable to HVAC filters with the rating of MPR 2200