Deluxe Tyvek Expansion Envelopes, Open-End, 2″ Capacity, #13 1/2, Square Flap, Self-Adhesive Closure, 10 x 13, White, 100/Box

Ideal for mailing bulky items and materials. Excellent alternative to heavy boxes and cartons. Superior water-, chemical-, moisture-, burst-, tear- and puncture-resistant protection. Open-End (Vertical Orientation)?Features a maximum capacity of 2″. Seam Type: Center; Flap Type: Square; Trade Size: #13 1/2; Security Tinted: No.