NSSP Product Type: 9 x 4 inch Envelopes Product Color: Brown Package: 200 PCs of Catalogue Envelope Ideal for home or office, the all-purpose Catalog Envelope, Peel & Seal, 200 Pcs makes an excellent alternative to low-quality envelopes that tear easily and offer little security. Durable Design: Perfect For Secure Everyday Home And Business Mailing. Our Security Windowless Envelopes Perfectly Standard Size 9 x 4 inchs, Paper Sizes And Other Large papers.  9 x 4 catalog envelopes with closure are the perfect choice for mailing catalogs, documents, photos and other business mailings. They are also great for storage. Business Envelopes: security-tinted envelopes By NSSP to fit billing statements, paychecks and receipts; claim form envelopes for hospitals and physicians; and every business need under the sun. Mail more economically and efficiently with quality stock and quality features. This envelopes prevents viewing inside contents through the closed envelope, even when it’s held up to the light. Send checks, invoices, financial information, or other confidential documents without having to worry about compromising sensitive information.