Rotunda Series, Oil Rubbed Bronze finish 2" x 2" wall mount operable transom pivoting clip. These square edge clips are designed to rotate a movable transom glass off a wall for frameless shower applications. Solid Brass construction. For use with 3/8" - 1/2" Tempered Safety Glass. Clamp must be centered on the transom glass to achieve balanced movement. Maximum movable transom glass size is 16" x 30". Requires 5/8" - 3/4" Diameter hole or notch in the glass. 3 Year Warranty.