Manufacturer Name: Lennox Product Number: X6670 OEM Part Number: X6670 Product Description: 16"X25"X5" Merv11 Repl Filter Weight:1.65lbs/748.43g Looking For The Best Prices On OEM/Replacement Part Lennox X6670 Disposable Pleated Box Filter 16" X25" X5" MERV11 You've come to the right place. Shop at PartsHnC with same day shipping and 100% satisfaction. https://www.partshnc.com/16x25x5-merv11-repl-filter