6" x 9" catalog mailing envelopes feature a quick, easy, Redi-Strip closure. Just peel and press for a strong, durable seal. Redi-Strip envelopes are the answer for concerns about surface germs in the workplace. Stay safe and save time with every mailing. Peelable strip protects the adhesive from dust to last longer in storage. Self-seal envelopes are compatible with inkjet printers but are not recommended for laser printers. Heavyweight, 28 lb. Kraft paper is opaque and durable. Center seam adds strength to handle heavy contents. Small envelopes are perfect for unfolded, half-sheet papers or larger, folded documents. Classic, open-end construction makes a perfect, economical envelope for 6" x 8" greeting cards.