With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer
Nordic Pure 10x10x1 MERV 13 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home
Nordic Pure 12x24x1 MERV 14 Plus Carbon air filters are made of electrostatically charged synthetic materials with an added flat panel infused with activated charcoal that attracts and capture most airborne particulates in your home
especially during home improvements
such as chemicals from household cleaning products
16x21 1/2x1 Exact MERV 10 AC Furnace Filters Number Per Box:6 With the 4" and 5"Actual Size: 16 x 21 1 2 x 3 4 (16 x 21. 5 x 0. 75) Removes pollen, smoke particles, pet dander, bacteria, allergens, mold, virus carriers, and other contaminants. Ideal for normal air filtration and will help those with mild allergies. Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 10 is equivalent to MPR 1000 Made in the USA. Nordic Pure MERV 10 Pleated AC Furnace Air Filters provide