This premium 28lb booklet envelope is perfect for your packaging needs. With a size of 9″ x 12″ and a weight of 4.17 pounds, it is ideal for carrying your documents and other materials safely and securely. The envelope comes in a pack of 100, making it suitable for large volumes of mailings. The envelope is designed by ULINE Envelope, a trusted brand in the packaging industry. It is made of high-quality materials and has a sleek white color that is perfect for any business or personal use. The package dimensions are 13.23 x 10.28 x 2.8 inches, providing ample space for your materials. This envelope is perfect for other envelopes and mailers, as well as for packing and shipping. Get your hands on this premium envelope today and ensure that your materials are safe and securely delivered.