Bobrick B-8263 Commercial Foam Soap Dispenser, Counter Mounted, Touch-Free, Stainless Steel - 6" Spout Length (Soap Not Included - Please See B-8263.18)Touch free sensor detects user's hand to automatically dispense controlled amount (0 8ml) of soap; activation range is 4" (100mm) from sensor lens Bright polished chrome spout cover dispenses 1000 hand washes per 800ml or 2000 hand washes per 1600ml OneShot soap refills Requires 4 "D" Cell batteries (not included) Maximum countertop mounting thickness is 2" (50mm) and contains a spacer for use with sink rim 3 4" (19mm) or greater Dispenser Only.