Supremex Single Window Envelope #10, White, 500/Box (SPX1040480FSC)

Single Window - #10 - 9 1/2" Width x 4 1/8" Length - Flap - Wove - 500 / Box - White

• Standard window for easy mailings
• No catching on seam while inserting to reduce jamming and downtime
• Increased flap size for sure sealing
• Double score on flap for expansion
• Meets Canadian and U.S. postal standards