ASI 645210A 41 Piatto Recessed Automatic Roll Paper Towel Dispenser (Battery Operated), Black Phenolic Door, 16 1 16" x 28" x 9 13 16" Urinal Screen Cigarette receptacles are standalone units Cigarette receptacles are standalone units for extinguishing cigarette butts and collecting ashes the dispenser stores one stub roll of towels that is 4 inches in diameter and 8 or 9 inches in length and draws towels from this smaller roll if the main roll becomes completely depleted Dispenser is powered by (4) D size batteries (not supplied) and operates automatically to activate towel dispensing when hands are placed in sensor zone (244m) long and one 8" wide [203] stub roll up to 4" diameter [102] and automatically changes over to main roll when finished with stub roll when feed tabs are properly engaged