About this item STANDARD SIZE – Easily send everyday mail. These #10 size envelopes measure 4-1/8" x 9-1/2" and can hold folded letter-size documents. SECURE SEAL – Quick and simple sealing. Mead Press-It Seal-It envelopes feature a self-adhesive strip to help keep your contents safe and secure. SECURITY LINING – Keep your personal information personal. These envelopes have a security lining to help maintain privacy of your documents. USE ANYWHERE – These all-purpose 20 lb. white envelopes are great for both office and home use. Made in the U.S.A. VALUE PACK – Stock up on your supplies. This box contains 45 envelopes. Made with SFI (Sustainable Forest Initiative) certified sourcing. › See more product details