500/Box Gummed Security Tinted #10 Window Envelope, 4-1/8" x 9-1/2", White Wove note: #10 with (1-1/8x4-1/2"), window is 7/8" from left, 1/2" from bottom

US # 10 business envelopes are suitable for many mailing projects
Made from white 24 lb. paper for durability
Size: 4-1/8" x 9-1/2"
Gummed closure with a Commercial Flap keeps contents in place
Security-tinted pattern helps to discourage reading sensitive information through the outside of the envelope
500 envelopes per box
#10 with (1-1/8x4-1/2") window (note: window is 7/8" from left, 1/2" from bottom)

Quill Single Window Security Envelopes Keep Your Mail Secure

Keep your business mail out of sight and safe from nosy individuals by storing them in these durable, standard, single-window security envelopes from Quill.

Quill's standard, single-window security envelops help to keep your mail hidden by using a special security pattern. The large size makes this collection a great choice for your business mail, and a window on the lower left-hand side reduces work by showing the mailing destination.

Long-Lasting Supply and Large Size Is Great for Business Use

Quill’s security envelops measure 4 and 1/8 by 9 and 1/2 inches each, making them the perfect size to mail out letters and other printed documents that use standard-sized computer paper. Since there are 500 envelopes per box, you are guaranteed a long-lasting supply of envelopes to cut back on purchases and ease your mind.

Durable and Secure to Protect Contents

Each one of Quill’s security envelopes have a blue pattern on the inside that helps conceal what’s inside, ensuring greater privacy and protection of your business mail. The envelopes have a 24-pound white wove for durability, and the gummed lining helps ensure you can securely seal your contents for long journeys.