: Mailing & Shipping Supplies : Envelopes : tyvek expansion envelopes

Ideal for securing bulky mailings Expanding gusset helps get your extra-thick mailings through the mail. Redi-Strip closure requires no moisture to seal. Made of ...  more

Heavyweight, open-end envelopes are super strong, moisture-resistant and tear-resistant. These plain envelopes feature a Tyvek expansion. Sparco Plain Open End ...  more

Ideal for securing bulky mailings Expanding gusset helps get your extra-thick mailings through the mail. Redi-Strip closure requires no moisture to seal. Made of ...  more

Strong material won't rip, tear or puncture Expand to allow for easy insertion of bulky items like books, binders, catalogs, etc. Lightweight to help you save on ...  more

Strong material won't rip, tear or puncture Expand to allow for easy insertion of bulky items like books, binders, catalogs, etc. Lightweight to help you save on ...  more

Strong material won't rip, tear or puncture Expand to allow for easy insertion of bulky items like books, binders, catalogs, etc. Lightweight to help you save on ...  more

Ideal for securing bulky mailings Expanding gusset helps get your extra-thick mailings through the mail. Redi-Strip closure requires no moisture to seal. Made of ...  more

Greener choice - contains 25% postconsumer recycled content. Best Value Plain Open-End Tyvek Expansion Envelopes, Plain, 14 Sub, 1 1 - 2in. Exp, 10in. x 13in., WE ...  more

Ideal for securing bulky mailings Expanding gusset helps get your extra-thick mailings through the mail. Redi-Strip closure requires no moisture to seal. Made of ...  more

Strong material won't rip, tear or puncture Expand to allow for easy insertion of bulky items like books, binders, catalogs, etc. Lightweight to help you save on ...  more

Greener choice - contains 25% postconsumer recycled content. Best Value Plain Open-End Tyvek Expansion Envelopes, Plain, 14 Sub, 2in. Exp, 12in. x 16in., WE is one ...  more

Ideal for securing bulky mailings Expanding gusset helps get your extra-thick mailings through the mail. Redi-Strip closure requires no moisture to seal. Made of ...  more

Strong material won't rip, tear or puncture Expand to allow for easy insertion of bulky items like books, binders, catalogs, etc. Lightweight to help you save on ...  more

Universal UNV19003 Ideal for mailing bulky items and materials. Excellent alternative to heavy boxes and cartons. Superior water-, chemical-, moisture-, burst-, ...  more

Universal UNV19004 Ideal for mailing bulky items and materials. Excellent alternative to heavy boxes and cartons. Superior water-, chemical-, moisture-, burst-, ...  more

Business Source BSN65806 Heavyweight Tyvek Envelopes are super strong, moisture-resistant and tear-resistant. Tyvek expansion is ideal for superior protection for ...  more

Sparco SPR25005 Heavyweight, open-end envelopes are super strong, moisture-resistant and tear-resistant. These plain envelopes feature a Tyvek expansion.  more

Universal UNV19002 Ideal for mailing bulky items and materials. Excellent alternative to heavy boxes and cartons. Superior water-, chemical-, moisture-, burst-, ...  more