The Limbaker patio wall sconce features high quality and historical attributes of the turn of the century gas lights. Finished in brown with crackled blown glass that radiates tradition and warmth. This sconce requires one A19, 60 Watt bulb that can be placed on a dimmer. The back plate measures 4.7 x 8 inches. UL Rated for outdoor use. Professional installation by an electrician is recommended.