A vintage Art Deco style Glass Ceiling light shade in the form of a Clam Shell design of three clam shell pieces, which fit together with a gold metal frame, mounted with a stud shaped tip/finial. The metal frame also supports the three chains from which the shade hangs. The shade measures 13 1/2" or 34.3 cm wide and the total length of drop measures approx 15" or 38 cm long. It is in good condition, with no damage to the glass or metal frame. It is easily fitted by suspending from a ceiling rose with a hook, which are available on ebay. I have matching wall lights to this and lights and similar listed.