- Tyvek envelopes provide superior puncture, tear and moisture protection.
- Constructed from 14 lb. olefin.
- Ten times stronger than paper envelopes.
- Feature a special seal that once broken, the word "OPENED" appears in red on the flap.
- Strength Material:
- 14 lb. Olefin
- Shipping Unit:
- 100 PER CASE
- Width:
- 9.00"
- Height:
- 12.00"