This Forney welding lens is the perfect addition to your welding helmet! Fits Forney ITEM#'s 55647 ("Patriot"), 55669 ("Finish Line"), 55672 ("Bandit III"), 55673 ("Bandit II"), 55684 ("Titan") and 55686 ("Super Slim") welding helmets and a variety of brand name helmets, it features a 5-1/4-inch (133.35 mm) x 4-1/2-inch (114.3 mm) window opening and provides UV/IR protection, meeting ANSI Z87.1 Safety Standards. Upgrade your welding gear today!