Pottery Barn | Vintage Recessed Medicine Cabinet in Polished Nickel, 17"x27" Adjustable shelves are made of tempered glass. Sealed with a protective lacquer for moisture resistance. Fitted with beveled mirror. Small features 2 adjustable tempered-glass shelves; large has 3 adjustable shelves. Can be mounted to open left or right. Tempered glass is a safety glass that is manufactured through a process of extreme heating followed by rapid cooling, making it harder than normal glass and resistant to breakage. Overall: 17" w x 4.75" d x 27" h Wall Cutout: 14.5" w x 3.5" d x 24" h Interior: 14.5" w x 4" d x 18" h Shelf (2): 14.25" w x 3.75" d Weight Capacity (per shelf): 18.5 lbs Weight: 21.5 lbs *Available for local pick up in the Washington DC area*