Number 11 Envelopes – Secure & Professional for Business & Legal Use

The Number 11 envelope (4 1/2" x 10 3/8") is a versatile choice for business letters, legal documents, and corporate mailings. Slightly larger than the standard #10 envelope, this size provides extra space for thicker documents, contracts, and multi-page correspondence. Whether you're mailing important financial paperwork, legal forms, or professional letters, our high-quality Number 11 envelopes offer a secure and polished solution.

Dimensions: 4-1/2" x 10-3/8", Max. Enclosure Size: 4-1/4" x 10-1/8"