Survivor‚® 14-1/4 x 20 DuPont Mailers with Self-Seal Closure - 25 / BX - 14 1/2 Width x 20 Length - 18 lb - Self-sealing - 25 / Box - White

Sturdy, jumbo envelopes offer a super-strong Tyvek construction and a convenient Flap-Stik closure. Great for storing artwork, plates, negatives, maps and blueprints. Heavyweight, moisture-resistant envelopes won't rip, tear or puncture. Envelopes are much stronger and more secure than paper envelopes.

• Made with durable yet lightweight, 18 lb. DuPont Tyvek that's tough enough to resist punctures, tears, moisture and chemicals for long-lasting performance
• Release strip so the recipient can easily access the contents yet maintain a secure close
• Self-seal, Redi-Strip closure for a clean, quick seal immediately on contact
• Peel-off strip to protect adhesive from dust for a longer shelf life