Business Source Economical No. 10 Window Envelope - 500 / BX - Single Window - #10 - 9 1/2 Width x 4 1/8 Length - 24 lb - 500 / Box - White

No. 10 window envelopes feature an economical side seam and a window with film cover. Oyster-white, corrugated, expandable box provides easy access to envelopes. 24 lb.

• Front window allows use with printed address to prevent reading errors
• Gummed flap creates secure closure to prevent peeling during transit
• 24 lb. stock produces high-quality look and feel
• Perfect for businesses, schools, personal use and more