20" x 30" - 3.5 Mil Poly Mailer White - Case of 100

Heavy-duty poly mailers engineered for demanding shipping applications. These 20" x 30" envelopes feature 3.5 mil polyethylene construction that resists tears, punctures, and moisture while remaining lightweight to minimize postage costs. The self-sealing adhesive closure ensures secure sealing without additional materials, while the smooth surface accepts ink, stamps, and labels without smudging. Water-resistant properties protect contents from environmental exposure, and tamper-evident design deters unauthorized access. Ideal for e-commerce, documents, and merchandise requiring reliable protection. Case of 100.