18x20x1 (17_3/4x19_3/4) Nordic Pure Tru Mini Pleat MERV 11 Air Filters 6 Pack

Nominal Size: 18 x 20 x 1, Actual Size: 17 3/4 x 19 3/4 x 3/4 (17.75 x 19.75 x 0.75) Ultimate allergen and airborne particle reduction Great for Residential and Commercial HVAC units More surface area than standard pleats so it lasts longer. Made in the USA: Proudly manufactured in the USA, ensuring quality and supporting local production. Provides advanced particle capture without compromising airflow, boosting your HVAC system’s efficiency and air quality.