The Staples #10 Business Envelopes are a high-quality product manufactured in the United States. With a unit quantity of 500, this box of white envelopes is perfect for businesses and industrial use. These envelopes are designed for efficient packaging and shipping, making them a reliable choice for various mailing needs. The Staples brand ensures a trusted product that meets the needs of customers looking for durable and reliable envelopes for their business operations.