This is an awning operator of aluminum diecast construction with a gray baked enamel finish used on Air Control-Keller Windows. It is left-handed with a matching crank handle with a 2-3/8 inch link arm. Has an L-shaped mounting hole pattern that is 5-1/4 in. from center of the top hole to the center of the bottom hole and the two horizontal holes in the bottom leg are 1-1/8 in. on center.