3M-Matic™ Case Sealer 800af with 3M™ AccuGlide™ 3 Taping Head seals both top and bottom center seams of regular slotted containers without the need for an operator. It automatically folds the top flaps and applies a "C" clip of Scotch® box sealing tape to the top and bottom of the box — at speeds of up to 40 uniform cases per minute.