Product: Aviditi TYF0609WH Tyvek Olefin Flat Envelope, 9" Length x 6" Width, White (Case of 100)
Brand: Tyvek
Color: White
Tyvek envelopes provide superior puncture, tear and moisture protection
Constructed from 14 lbs olefin
Ten times stronger than paper envelopes
Feature self-seal closure
Measures 9-inches length by 6-inches width

Search query: 6x9 envelopes
Relevance: Substitute