MMI DOOR steel entry doors are an intricate part of home design. All of the steel doors are galvanized to resist rust and corrosion, are comprised of 24-gauge, high-quality steel with 22 gauge steel stiles and rails for additional strength and security. These steel doors come with a one-piece, high-density polystyrene core delivering excellent insulation allowing it to meet or exceed current energy code standards. Each door comes with a 10-year warranty on the door component, a limited lifetime warranty on the prehung unit as well as a 10-year glass lite warranty and 10-year warranty on the painted finish of the pre-hung door component.
