single c. 1930's depression era antique american ornamental cast aluminum art deco slip shade ceiling fixture replacement canopy likely designed and fabricated by the riddle lighting co., toledo, oh. the decorative ceiling canopy retains the original polychromatic finish with very little wear evident. the light fixture canopy contains several design elements consistent with the period. the set screw used to fasten the canopy securely against the stem is original and intact. measures 5 1/2 x 5 1/2 x 2 1/2 inches.