Eco-Aire 23 1/2 x 23 1/2 x 1 Premium MERV 6 Fiberglass Air Conditioner Filter, 6 Pack Actual Dimensions: 23 1/2" x 23 1/2" x 1" Made in the USA Ships Directly in Factory Packaging Designed to last up to 30 Days Comparable to Filtrete Brand Filters