Details Each substantial, 1½"-thick glass shade is carved from a block of crystal that takes up to 25 days to make; the temperature of the molten glass as it cools is precisely measured and monitored to prevent hairline fractures or cracking The glass is then shaped by hand and lathe-turned at high speeds in a multi-day process; cutting speed and temperature are carefully monitored to maintain the integrity of the glass The crystal form is finished with wet-stone grinding and polished by hand over several days Frame is handcrafted from solid brass Blown glass may reveal the artisan's touch in the form of small air bubbles or a slightly asymmetrical form. These are typical of a one-of-a-kind work of art. Rated for one 25W max. E26-base bulb Bulb included Dimmer switch compatible 110-120V manufactured to US standards for US and Canadian markets Certified to Damp UL electrical standard: suitable for use indoors, such as bathrooms where it is subject to moisture, and in sheltered outdoor areas Hardwire Requires professional assembly and installation by a licensed electrician. delivery service does not include assembly or installation. Wipe with a soft, dry cloth; avoid the use of all cleaners and abrasives, as they will damage the finish Dimensions Sconce: 7"W x 8¾"D x 16"H Backplate: 6"W x 1½"D x 4"H Weight: 7 lbs.