20x25x5 (4 3/8) Lennox X6673_X6675 Replacement MERV 12 Pleated + Carbon 4 Pack

Nominal Size: 20 x 25 x 5 L x RED, Actual Size: 19 3/4 x 24 3/4 x 4 3/8 (19.75 x 24.75 x 4.38) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. Two beneficial air filters in one - MERV rated synthetic poly blend activated carbon infused pleated media Nordic Pure recommends changing 5" air filters every 3-6 months Made in the USA: Proudly manufactured in the USA, ensuring quality and supporting local production Advanced filtration reduces airborne irritants such as smoke and smog, supporting a healthier home environment. The Plus Carbon offers additional odor and chemical fume absorption.