THE DISPENSER ACTIVATES VIA INFRARED SENSOR DETECTION TO DISPENSE PAPER TOWELS AUTOMATICALLY WITHOUT THE NEED FOR CONTACT. EACH SOLID PLASTIC UNIT OPERATES AT THREE LENGTH OPTIONS 7-7/8"" 9-7/8"" 11-7/8"" AND FEATURES A ONE-SECOND DELAY BETWEEN EVERY DISPENSE ACTION TO AVOID PAPER TOWEL WASTE. COLOR FINISH IS SMOKE GRAY WITH A LIGHT GRAY BACKING. SURFACE MOUNTABLE AND ACCEPTS 8"" NON-PERFORATED ROLLS. SOLID PLASTIC HOUSING CONSTRUCTION PROVIDES LASTING DURABILITY. DIMENSIONS ARE 15-1/4""H X 11""W X 8-7/8""D. ACCEPTS 4 X D ALKALINE BATTERIES (SOLD SEPARATELY).