The Bobrick B-318 Recessed Paper Towel Dispenser features a concealed cabinet that is hidden behind the surface of the wall, so that only the paper towel tray is visible after installation. The unit requires a rough opening that is 12 inches wide and 18-1/4 inches high. To accommodate the dispenser, the opening must be at least 4-1/2 inches deep. A minimum of 6 inches of space is required below the unit as well. The entire dispenser is made of type-304, heavy gauge stainless steel. The paper towel tray can hold 600 C-fold or 800 multi-fold paper towels and is equipped with two self-closing panels outfitted with stainless steel piano hinges. Unlike many other paper towel dispensers, the Bobrick B-318 is loaded from the bottom up rather than the top down. Since there is no visible door, the unit is theft and tamper-resistant. Bobrick B-290 Series stainless steel angle-frame mirrors are recommended for use in conjunction with the dispenser.