JAM Paper & Envelope Black 10 x 13 Open End Catalog Envelopes with Clasp Closures measure 10 x 13 inches in size and are made out of smooth 28lb high quality paper. Each one features straight flap with a metal clasp closure along with an optional gum closure for added reinforcement. There is an even total of 10 envelopes contained in this pack. Each one features a sleek and sophisticated jet black color. The appearance of these envelopes makes them great for any home or office need! Because of their size these envelopes are perfect for enclosing standard sized and slightly larger documents without bending our folding. Use them to send documents forms files and more! Every envelope on this page opens on the SHORT SIDE of the envelope. CLASP envelopes have a gum and a metal clasp. The OPEN END envelopes (no clasp) just have a gum. These catalog envelopes are essential for your next mailing. Size: 10in x 13in | Color: Black | Quantity: 10