This high-quality envelope is made by Neenah, a trusted brand in the packaging industry. It measures 4 1/8 x 9 1/2 inches and features a window design, making it perfect for sending letters or small packages. The envelope is made from durable materials and is designed to withstand everyday wear and tear. It is a great addition to any office or home decor. The Neenah #10 Poly Window 24 # 4749000 Whitestone envelope is manufactured in the United States and is available in a pack of 2500 units. It is ideal for use in various industries, including business and industrial settings. The envelope is designed to provide reliable and efficient service, making it a top choice for many companies.