Nominal Size: 24 x 24 x 1, Actual Size: 23 3/8 x 23 3/8 x 3/4 (23.38 x 23.38 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 Innovative compact pleat design and higher MERV filtration makes the versatile Mini Pleat useful in residential, commercial, and industrial environments