No cutting on the frame is required for installation. Simply place the electric strike on the surface of the frame, align it with the exit latchbolt and install. The outdoor rated HES 9600 is field selectable for fail secure and fail safe operation, and for 12 or 24VDC. The HES 9600 was the first surface mounted electric strike designed with the strength and durability required to exceed the severe forces of ANSI Windstorm testing. Main Features Installs in metal or wood frames Wood screws not provided Separate base and decorative cover for easy adjustments Stainless steel construction Tamper-resistant