WEB Eco Plus Filter (Adjustable Washable, 25x30-Inch, 1pc),WP2530 Washable reusable adjustable furnace AC filter Captures pollen dust and dander sized airborne particles Wash and reuse for up to ten years, high efficiency Adjustable frame fits larger sized standard filter up to 25-Inch by 30-Inch Frame adjusts from 14x30 up to 25x30