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About this item

• PROTECT CONFIDENTIAL INFORMATION: A blue security tint with safety pattern blocks visibility, helping safeguard confidential information from prying eyes, even when held up to light
• SECURE BUSINESS MAILING: Commonly used for invoices, replies, and returns, these double window security envelopes protect sensitive information while ensuring addresses align and read clearly
• FAST, MESS-FREE SELF SEAL ENVELOPES: Redi-Seal envelopes feature press-to-seal adhesive flaps that create a secure closure without peel-strip trash, licking envelopes, or the need for wet sponges
• PRESENT A PROFESSIONAL IMAGE: Thick 24 lb white wove paper with side seams creates a crisp, high-quality look that reflects well on your business and holds up in transit
• STOCK-UP VALUE PACK: 500 business envelopes per box keep offices and home businesses ready to mail; #9 envelopes are 3-7/8 x 8-7/8 inches and are great for billing paperwork, tax documents, and accounting records

Columbian #9 Double Window Envelopes are built for businesses that rely on accurate, professional business mailings every day. These white security envelopes work well for invoices, accounting documents, and sensitive client information, allowing only addresses to appear in the windows. The top window measures 7/8 x 3 1/2 inches, 3/8 inches from the left and 2 inches from the bottom. The bottom window is 1 x 4 inches, 3/8 inches from the left and a 1/2 inch from the bottom. \n\nTo help protect sensitive financial information, each envelope features a blue security tint with a printed privacy pattern. This internal design limits visibility through the paper, reducing the risk of confidential data being read during handling, sorting, or delivery. The durable 24 lb white wove paper and side seams provide durability during mailing while maintaining a high-quality finish for both small offices and high-volume mailrooms. Mailing efficiency is improved with self seal business envelopes. A unique Redi-Seal closure has two adhesive flaps that you simply press together to seal—no moisture or peel strip trash.\n\nWith 500 envelopes per box, this bulk pack supports consistent mailing needs without frequent restocking. Columbian Security Envelopes offer a smart solution for businesses that value privacy, efficiency, and a polished presentation in every mailing. (Manufacturer Item Number: COLO181)