Tyvek Self Seal Expandable Envelopes, Side Opening, 12"W x 16"L x 2"D, White, 100/Pack

THESE TYVEK® ENVELOPES PROVIDE SUPERIOR PUNCTURE, TEAR AND MOISTURE PROTECTION. FEATURES:

CONSTRUCTED FROM 18 LBS OLEFIN TEN TIMES STRONGER THAN PAPER ENVELOPES ENVELOPES EXPAND TO HOLD BULKY ITEMS FEATURES SELF-SEAL CLOSURE