Survivor‚® 18 x 23 DuPont Envelopes with Self-Seal Closure - 25 / BX - 18 Width x 23 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 and moisture during shipping
• Perfect for shipping larger contents
• Flap-Stik, peel-and-seal closure for a clean, sanitary seal without moisture; release strip for quick opening