Survivor Lightweight 14 lb Tyvek Catalog Mailers, First Class, #13 1/2, Square Flap, Redi-Strip Closure, 10 x 13, White, 100/Box (R1590)

Quality Park Survivor Catalog Mailers are made with durable 14-lb DuPont Tyvek, which is strong enough to withstand the most grueling conditions. The material is puncture, tear and moisture resistantvirtually indestructible. Yet, it is still lightweight which can provide a savings on shipping costs. These white mailing envelopes feature an easy Flap-Stik closure which requires no moisture for a secure seal and a release strip for quick, easy opening. USPS First Class MailLightweight 14 lb Tyvek. Seam Type: Center; Flap Type: Square; Trade Size: #13 1/2; Security Tinted: No.