9 x 12 Open End Envelope Open End, or Catalog, Envelopes have the opening on the short side, making it easy to fill the envelope without worrying that any of the contents will fall out. Use this to send flat, bulky materials or store multiple small items like coins, catalogs and jumbo cards. They're great for businesses! Peel & Seal Closure Looking for a fast and mess-free option? This envelope is quickly and easily sealed via the Peel & Seal Closure along the back flap, eliminating the need for glue or moistening. Peel it. Seal it. Done! Easily Personalize by Writing by Hand or Using a Press Compatible with most digital and offset printers, these envelopes are easy to customize. Want more of a DIY look? Gel Pens, Calligraphy and other hand crafts look amazing! LUXPaper is a premium stationery and office supplies brand focused on quality and variety. Our assortment of premium paper ranges from lightweight text stock to heavyweight cover stock, and every weight in between. LUXPaper products, including paper, cardstock, envelopes, and more, are available in a wide selection of sizes and in the largest variety of colors.