The Mankin Outdoor Flush Mount features handcrafted opal glass with radiating ribs and a matte finish, to realize a look both contemporary and natural. Includes a low-profile aluminum pan. Ebern Designs Opal glass is a soft white cased glass that can suit any classic or modern decor. The opal glass has a very tranquil glow that is pleasing in appearance. The smooth satin finish on the clear outer layer is a result of an extensive etching process. This blown glass is handcrafted by a skilled artisan, utilizing century-old techniques passed down from generation to generation.