Survivor Open End Expansion Mailers, DuPont Tyvek, #13 1/2, Cheese Blade Flap, Redi-Strip Closure, 10 x 13, White

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 safe

Seam Type	Center
Global Product Type	Envelopes/Mailers-Catalog Envelopes
Flap Type	Cheese Blade
Trade Size	#13 1/2
Security Tinted	No
Opening	Open Side
Closure	Redi-Strip®
Exterior Material	DuPont