QUAR1800, Quality Park Survivor Tyvek First Class Envelopes QUA R1800

Quality Park TYVEK & Tear-Resistant Envelopes: Quality Park R1800 Tyvek Open-End Envelope, 1st Class, 12'' x 15-1/2'', 100/BX, WE, QUAR1800, Patented release strip makes these open-end catalog envelopes easy to open. Convenient Flap-Stik closure does not require moisture to seal. First class envelopes made of DuPont Tyvek won't rip, tear or puncture. They are much stronger and more secure than traditional paper envelopes. Water-resistant and moisture-resistant. Lightweight to save on postage costs. Easy to use. Peel and seal. Environmentally safe. UPC 85227118004