Nordic Pure MERV 13 is equivalent to MPR 2200-2400
With the 4" and 5" air filters there is a wider variance between the nominal and actual size depending on the manufacturer
Nordic Pure 10x20x2 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
MERV 8 furnace air conditioner filters are comparable to HVAC filters with the rating of MPR 800
Nordic Pure 16x25x1 MERV 12 Plus Carbon air filters are made of a dual material where the MERV rated material has been fused together with a carbon layer
16x25x5 (4 3/8) Honeywell/Lennox Replacement MERV 10 Air Filters 10x22x1 Nordic Pure MERV 13 isActual Size: 15 3 4 x 24 3 4 x 4 3 8 (15. 75 x 24. 75 x 4. 38) Removes pollen, smoke particles, pet dander, bacteria, allergens, mold, virus carriers, and other contaminants. Replaces Honeywell 16x25x4 and filters with an MPR rating with an actual depth of 4 3 8 and ideal for normal air filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame. Nordic Pure MERV 10 is equivalent to MPR 1000 Made in the USA.