Universal Self Seal Envelopes 9"L x 12"H White 100/Box Make addresses stand out with this 100-pack of Staples 9 x 12-inch white wove self-sealing catalog envelopes. Protect large items of outgoing mail with these Staples white wove self-sealing catalog envelopes. Each envelope is manufactured with 28-pound white wove material that provides durability and high-contrast for dark labels and text, making addresses easy to read. These Staples white wove self-sealing catalog envelopes are extra-large, so you can ship or store catalogs, brochures and statements without folding. • Catalog envelopes are a reliable choice for multiple kinds of personal and business mailing purposes. • White paper shows labeling and writing clear and concise. • Dimensions: 9"L x 12"H, size #10. • Self-sealing closure quickly and easily secures your mail. • Envelopes come in boxes of 100, making them an easy, and economical choice for the business that needs to spend wisely without sacrificing quality.