Laluminum alloy, qq-a-225/8, composition 6061, temper t6anodized and painted finish, approx 3.502 in. Lg left side, approx 3.322in. Lg right side, approx 2.562 in. W, 0.500 in. H, 2.249 in. Min, 2.250in. Max center od, 2.032 in. Min, 2.035 in. Max center id by approx 0.246in. Deep, four 0.271 in. Min, 0.291 in. Max diameter mtg holes spaced 2.742 in.By 2.562 in. C to c, 1/4-28 unf-3b thd hole located 0.406 in. From centerof cover on right side 1.371 in. By 1.281 in.From bottom holes