Tyvek® Self Seal Colored Envelopes, 10"W x 13"L, Red, 100/Pack

These Tyvek® envelopes provide superior puncture, tear and moisture protection. They are constructed from 14 lb. olefin. These envelopes are ten times stronger than paper envelopes. They feature a special seal that once broken, the word "OPENED" appears in red on the flap.

Lightweight Kraft Catalog Envelopes, Gummed, 20-lb., 10 x 13, 250/Box Kraft Catalog Envelopes, White Catalog Envelopes Large flap with wide gummed seal. Kraft Lightweight 20-lb. paper stock. 250 envelopes per box. 10 x 13

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

These self-seal envelopes ensure fast and easy sealing without needing any moisture or adhesive. Simply peel off the tear strip and seal. The tear off strip keeps adhesive free from dust for a longer shelf life. The sides expand to hold bulky items. These end loading envelopes are constructed from durable 40 lbs paper stock.

Features: Self-Seal Envelopes make sealing envelopes fast and easy No moisture needed to seal! Simply peel off tear strip and seal Constructed from durable 28 lb. paper stock Tear off strip keeps adhesive free from dust for a longer shelf life