13x21x1 Exact MERV 12 AC Furnace Filters 6 Pack extension Measures 4'' tall x 5/8''

Measures 4'' tall x 5/8'' wide

and Cepaea spp

Dual Chambers

These pH testers work with Oakton's line of 10

Note: Lamp and cord sold separately

13x21x1 Exact MERV 12 AC Furnace Filters 6 Pack extension Measures 4'' tall x 5/8''Nordic Pure MERV 12 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, allergens and other contaminants are removed. MERV 12 furnace filters are comparable to HVAC filters with the rating of MPR 1500 1900. While different