BWI Commercial offers Masonry Hollow Metal Frames. For wood stud, steel stud, or block construction, the Masonry Frame can be furnished knock down or face welded. This standard 16 gauge, primed, cold rolled steel frame is strong and secure, and provides structural integrity to any commercial opening. Provided with mitered corners and a secure four tab interlocking system, the Masonry Frame is formed with precision breaking for crisp profile bends. BWI Commercial Masonry Frames are fire rated up to 3 hours in compliance with FM, Intertek, and Underwriters Laboratories (UL). In addition to the standard stock offerings, BWI Commercial can supply masonry frames in multiple profiles, jamb depths, gauges, and with a variety of hardware preparations. Contact your BWI Commercial team for details about our masonry frame offerings.