10 x 13 x 1 1/2" First Class Expandable Tyvek® Envelopes
- Constructed from 18 lb. olefin.
- Ten times stronger than paper envelopes.
- Envelopes expand to hold bulky items.
- Feature self-seal closure.
- 100 per case.
Stock Number | Pricing |
|---|---|
| Stock NumberTYE10131FC | Pricing |
Outside W x L x D: 10 x 13 x 1 1/2"
Quantity Per Case: 100
Opening: End
Order in Multiples of: 1
Freight Class: 85
Weight: 4.5 EA
NMFC Code: 153900-8
Ships Parcel: Yes
These 10 x 13 x 1½" expandable Tyvek® envelopes are built from 18 lb. spunbonded olefin — a material that outperforms standard paper envelopes in puncture resistance, tear strength, and moisture protection. The 1½" side gusset lets the envelope expand to accommodate thicker contents without stressing the seams or compromising the seal.
The "First Class" designation reflects a clean, professional finish suited for client-facing shipments, sample distribution, internal document routing, and e-commerce fulfillment where appearance is as important as durability. Legal, medical, and publishing operations also rely on this format for multi-page documents and padded inserts that exceed standard flat-mailer capacity.
The self-seal peel-and-press strip secures contents without tape or additional equipment. Each case contains 100 envelopes, supporting consistent inventory for high-volume shipping departments. The parcel-friendly format ships without special handling requirements.
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