#12 Brown Kraft Regular Envelopes 28lb (4 3/4 X 11) - 50 Per Pack Brown Kraft envelope - 50 Per Pack. Made from heavyweight 28-lb. stock for durability. Works great for home, office, interoffice, or mailing. Gummed flap provides a secure seal. Heavyweight 28-lb. stock. All Printer capatable Moistenable Glue Flap.