The ASI 045210A-6 Automatic Roll Paper Towel Dispenser is an attractive solution for dispensing paper towels and has a touchless design, which dispenses towels automatically. The automatic dispenser is powered by four, D-size alkaline batteries (purchased separately) and features an LED sensor to initiate dispensing. The semi-recessed unit requires a rough opening that is 15-3/4 inches in width by 26-1/2 inches in height by 4-1/4 inches in depth. The unit holds both a standard roll of paper towels that is 8 inches in diameter and 8 inches wide and a stub roll that is 4 inches in diameter and 8 inches wide. The unit allows you to adjust the dispensing length, the time delay before dispensing and whether or not to conserve paper by dispensing a smaller amount on the second activation. The door to the unit is made of type-304, 18-gauge stainless steel, while the rest of the unit is crafted from type-304, 22-gauge stainless steel.