This machine have three modules can provide gummed envelope,peel and seal envelope,and window envelope or all in one. Main ... speed12000 (pcs/hour)Thickness of paper60-120 (g/m2)Envelope specification: (Max)520X395 (mm) (Min)156X175(mm) ... width: 12mm-48mmPaper tape length: 120mm-240mmWeight of machine:SB:4800 (Kg) SB GS:7000(kg),SB ... F-SB Type Aufomafic gummed,peel & Seal,window Envelope Making Machine