The BestPack™ MTLW Series are Semi-Automatic Adjustable Tape Carton Sealers engineered for economical, effective operator-fed closure applications. The MTLW’s air-driven brush tucks the leading and trailing tabs that hang over the bottom of the carton. This brush facilitates top sealing of cartons from a min. height of 1/2″ high, three inches lower than the MTD’s min. height of 3.5″.