Patriotic American Flag Design – Professionally designed envelopes with a bold U.S. flag graphic, perfect for mailing income tax returns and important documents. Large 9" x 12" Size – Holds tax forms, IRS documents, legal papers, and business correspondence without folding. Heavy 28lb Kraft Paper – Strong and durable construction protects sensitive documents during mailing. Customizable for Businesses – Easily personalize with your company name using any laser or inkjet printer or apply 2" x 4" labels. Secure Gum Flap Seal – Deep gum flap with strong adhesive keeps contents safe and private. Versatile for Any Tax Year – Ideal for mailing IRS returns and financial paperwork every season. Made in the USA – High-quality envelopes proudly manufactured domestically. Store or Hand tax returns to Customers securely and professionally with Income Tax Return Envelopes, 9" x 12" Catalog (Open End) featuring the American Flag Design. Made from heavy 28lb Kraft paper, these envelopes combine durability with a patriotic, professional appearance. The American Flag design makes them ideal for accountants, tax professionals, and businesses that want a distinctive look. The 9" x 12" size provides ample space for IRS tax forms, legal documents, and financial records—no folding required. The deep gum flap with strong adhesive ensures your sensitive information remains sealed and protected. Envelopes can be customized by printing directly with laser/inkjet printers or by applying a 2" x 4" label. Suitable for any tax year and proudly Made in the USA, these envelopes are the dependable choice for secure tax document mailing.