Heavyweight 18 lb Tyvek Open End Expansion Mailers, #13 1/2, Square Flap, Redi-Strip Adhesive Closure, 10 x 13, White, 100/CT

Quick Overview

Expandable fit made of rip and water resistant Tyvek material with self seal flap.
Strong, lightweight envelopes made of Tyvek® material are half the weight of heavy-duty paper envelopes; save on postage with every mailing.
Envelopes made with Tyvek® repel water and resist acids, bases, salts, rot, mildew and stains; perfect for storing taxes and essential papers in the home office.
Redi-Strip ® envelopes seal tight to keep contents safejust pull and pressadheres without moisture for a clean, instant seal.
Ideal shipping envelopes for clothing, books, binders and big bulky papers.

$319.41/Carton