12" x 15-1/2" catalog 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. 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. white wove paper is opaque and durable. Center seam adds strength to handle heavy contents. Large envelopes can store letter-size or legal-size papers without folding. Classic, open-end construction is ideal for mailing manuscripts, homeschool packets, workbooks, sales literature, newsletters or contracts. Mail heavy enclosures with confidence.