Single Door Slim Line Medicine Cabinets. Anodized Aluminum construction. Three adjustable Tempered Glass Shelves. Recessed or Surface Mount by ordering the OPTIONAL #MSK Surface Mount Kit. Available in 2 sizes: 20″x30″ (18×28 Recessed Opening), 24″x30″ (22″x28″ Recessed Opening) and 4 finishes: Matte Black, Polished Chrome, Satin Brass, Brushed Satin.