Check the listing for details. 2500 #10 Single Left Window Security Envelopes, Gummed Closure (35310-2500). Color: White, Condition: New. Listed at 127.48 USD. 2500 #10 Single Left Window Security Envelopes - Gummed Closure, Security Tinted, Size 4-1/8 x 9-1/2 Inches, 24 LB - Case / 2500 Ct. (35310-2500)#10 SINGLE WINDOW SECURITY ENVELOPES; forget cheap, thin envelopes that allow contents to be easily read, our #10 Security Envelopes are premium quality, ultra secure envelopes suitable for everyday business and legal mailing while protecting sensitive contents and informationSINGLE LEFT WINDOW SECURITY ENVELOPES; tired of cheap paper envelopes that can be easily seen through? Our single left Window Security Envelopes are ultra-secure and perfect for mailing invoices, statements and legal documents, with secure moisture activated gummed seal and tinted security wave patternsTINTED SECURITY PATTERN; perfect for mailing invoices, statements, standard business, legal documents and sensitive correspondence, our #10 single window Envelopes are printed with a secure tinted pattern, easily obscuring numbers and data for premium, added security compared to other cheap envelopesEASY READ SINGLE WINDOW; perfect for bulk mailing, each envelope has a premium, extra large, easy read 4-1/2 X 1-1/8 poly-window, positioned 7/8" from the left and 1/2" from the bottom of the envelope, perfect for displaying addresses or business information, making slow printing and hand addressing a thing of the pastLONG LASTING SUPPLY; ideal for everyday business use, each box provides 2500 envelopes for a long lasting supply, each measuring 4-1/8 x 9-1/2 inches, perfect for invoices, statements and many more business uses!