CoreCarbon 20" x 30" x 1" Cut To Fit Furnace & Air Conditioner Washable Polyester Fiber Filter Media This high-quality washable heavyweight polyester fiber replacement filter media is designed for Furnace / Air Conditioners. MADE IN THE USA Replaces: Existing polyester fiber, natural fiber and foam style filter media Cut To Fit Filter Pad Size 20”x30"x1” May Fit Home HVAC Brands - Air-Flow - Armstrong - Allied Air - Alpine - American Standard - Axeman Anderson - Broan - Bryant - Carrier - Concord - Daikin - Ducane - Evcon - Gibson - Goodman - Intertherm - Lennox - Mammoth - Miller - Nordyne - Nortek - Nutone - Paloma - Payne - Revolv - Trane - And Many More *Registered mark of manufacturer. CoreCarbon is not affiliated with the above-mentioned manufactures.