Convertible automatic universal, roll paper towel dispenser and 12 gallon waste receptacle module can be interchanged with a universal, touch free module or a folded towel module and 18 gallon waste receptacle, respectively. Cabinet is not replaced when changing modules. Satin-finish stainless steel. Seamless beveled flange. Removable waste receptacle is locked into cabinet. Receptacle is 8" (205mm) deep with a capacity of 12 gallon; extends 4-1/8" from wall. Battery requirements: 4 Alkaline D Cells (not included). Material: Cabinet-18-8 S, type-304, heavy-gauge stainless steel. All-welded construction. Exposed surfaces have Satin-finish. Equipped with a tumbler lock keyed like other Bobrick washroom accessories. Flange-18-8 S, type-304, 22-gauge (0.8mm) stainless steel with Satin-finish. Drawn and beveled, one-piece, seamless construction. Door-18-8 S, type-304, 20-gauge (0.9mm) stainless steel with Satin-finish. Drawn, one-piece, seamless construction. Secured to cabinet with full-length, stainless steel piano-hinge. Equipped with a tumbler lock keyed like other Bobrick washroom accessories. Automatic roll towel dispenser-Durable, high-impact resin materials. Accepts universal standard-core, non-perforated rolls up to 8" wide, 8" diameter. 800' long. Dispenses one towel per dispense and can be set to dispense paper towels at three different lengths. Accommodates up to 3-1/2" diameter stub roll with automatic transfer to full roll. Waste receptacle-18-8 S, type-304, 22-gauge (0.8mm) stainless steel with Satin-finish. Edges hemmed for safe handling. Secured to cabinet with a tumbler lock keyed like other Bobrick washroom accessories. Equipped with interior hooks for optional vinyl liner. Rough Wall opening Measures 16" width by 54-3/4" height by 4" minimum depth. Measures 17-3/16" width by 56" height.