The product is a pack of 12 x 15 1/2 open end catalog commercial envelopes in brown manila paper. Each pack contains 25 envelopes, with a rectangular shape and gummed closure with a product dimension of 12 x 0.1 x 15.5 inches. They are designed with a gummed and clasp closure type, and weigh 1.73 pounds. Made in China, these envelopes are ideal for business and industrial use in handling and shipping materials.