needs cleaning, has some scuffs and clouding. i haven't tried to clean it because i do not want to risk removing any paint.2 1/4" inside diameter at top (channel) , approximately 3.75" high, 12" diameter at bottom, and 6" across the top. has 4 pre-drilled holes at top. i do not know if this shade is used on hanging lamp or table lamp.inside of shade is white enamel.