6-1/2" x 9-1/2" catalog mailing envelopes feature a quick, easy, Redi-Seal closure ideal for bulk mailings. Redi-Seal closure includes a pressure-activated latex adhesive on two surfaces. Just press together for a strong, durable seal - no paper strips or moisture required. Redi-Seal envelopes are the perfect answer for concerns about surface germs in the workplace. Save time and cut the waste with every mailing. Envelopes are compatible with inkjet printers but are not recommended for laser printers. Heavyweight, 28 lb. Kraft paper are opaque to protect private contents and durable enough to handle hard office tasks. Center seam adds strength to handle heavy contents. Small envelopes are perfect for small, unfolded documents or larger, folded documents. Classic, open-end construction makes a perfect, economical envelope for 6" x 8" greeting cards.