24x36x1 (Exact size = 24 x 36 x 7/8 inches) Electrostatic Washable Permanent A/C Furnace Air Filter - Reusable - GOLD FRAME Measures exactly 24x36x7/8 inches Traps 95% of airborne dust and allergens - Permanent & Washable - Just hose off and reinstall Replaces disposable furnace filters - Lifetime Warranty Made in USA with a premium quality extruded aluminum, gold anodized frame with a durable and attractive finish. Self-charging electrostatic filter media - does not require electricity