Tax professionals and office managers, these Cashier Depot tax return envelopes are exactly what you need during tax season. They're the standard 10x13 inch catalog size with an open end design, perfect for mailing those important tax documents securely. Made from premium 28lb white paper, these envelopes feel substantial and professional - not flimsy like some cheaper options. The deep gum flap with strong adhesive ensures they stay sealed during mailing, which is crucial when you're sending sensitive financial information. What's really convenient is the customization option - you can run them through any laser or inkjet printer to add your company name and information, or use 2x4 inch labels if you prefer. They're made right here in the USA, so you're supporting domestic manufacturing. The 100-count box gives you plenty for the tax season without taking up tons of storage space. These envelopes aren't year-specific either, so if you have leftovers, you can use them next tax season without issue. The white color looks clean and professional, and the 28lb weight means they provide good protection for documents without making your mailings too heavy. Whether you're an accounting firm, tax preparer, or business handling your own tax documents, these envelopes make the mailing process smooth and professional. They're reliable, well-made, and exactly what you need for sending those important tax returns to clients or the IRS.