12 x 16 x 4" White Expandable Tyvek® Envelopes $99.95 12 x 16 x 4" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
12 x 16 x 2" First Class Expandable Tyvek® Envelopes $142.04 12 x 16 x 2" First Class Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
12 x 16 x 2" White Expandable Tyvek® Envelopes $130.96 12 x 16 x 2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
10 x 15 x 2" White Expandable Tyvek® Envelopes $116.58 10 x 15 x 2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
10 x 13 x 2" White Expandable Tyvek® Envelopes 100 PER CASE $107.70 10 x 13 x 2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
10 x 13 x 2" White Expandable Tyvek® Envelopes 100 pr CASE $103.39 10 x 13 x 2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
10 x 13 x 1 1/2" First Class Expandable Tyvek® Envelopes $95.47 10 x 13 x 1 1/2" First Class Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature... Add to Cart
10 x 13 x 1 1/2" White Expandable Tyvek® Envelopes $87.32 10 x 13 x 1 1/2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal... Add to Cart
9 x 12 x 2" White Expandable Tyvek® Envelopes $92.90 9 x 12 x 2" White Expandable Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 18 lb. olefin. Ten times stronger than paper envelopes. Envelopes expand to hold bulky items. Feature self-seal closure... Add to Cart
10 x 13" Tamper Evident Tyvek® Envelopes $101.72 10 x 13" Tamper Evident Tyvek® EnvelopesTyvek® 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... Add to Cart
9 x 12" Tamper Evident Tyvek® Envelopes $94.21 9 x 12" Tamper Evident Tyvek® EnvelopesTyvek® 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... Add to Cart
18 x 23" White Flat Tyvek® Envelopes $275.72 18 x 23" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
15 x 20" White Flat Tyvek® Envelopes $227.18 15 x 20" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
13 x 19" White Flat Tyvek® Envelopes $145.46 13 x 19" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
12 x 15 1/2" White Flat Tyvek® Envelopes $71.75 12 x 15 1/2" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class... Add to Cart
10 x 15" White Flat Tyvek® Envelopes $60.75 10 x 15" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
10 x 13" First Class Flat Tyvek® Envelopes $52.60 10 x 13" First Class Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class... Add to Cart
10 x 13" White Flat Tyvek® Envelopes 100 PER CASE $67.90 10 x 13" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
10 x 13" White Flat Tyvek® Envelopes 100 pr CASE $51.58 10 x 13" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class printed... Add to Cart
9 1/2 x 12 1/2" White Flat Tyvek® Envelopes $50.97 9 1/2 x 12 1/2" White Flat Tyvek® EnvelopesTyvek® envelopes provide superior puncture, tear and moisture protection.Constructed from 14 lb. olefin. Ten times stronger than paper envelopes. Feature self-seal closure. Available in plain and First Class... Add to Cart