12 x 16 x 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 NumberTYE12162FC | Pricing |

Outside W x L x D: 12 x 16 x 2"
Quantity Per Case: 100
Opening: End
Order in Multiples of: 1
Freight Class: 85
Weight: 6.58 EA
NMFC Code: 153900-8
Ships Parcel: Yes
These self-seal expandable Tyvek® envelopes measure 12 x 16 x 2" and are constructed from 18 lb. olefin material — the same spunbonded polyolefin used in DuPont Tyvek® products. That construction delivers puncture, tear, and moisture resistance that standard paper envelopes cannot match, while the peel-and-strip adhesive closure eliminates the need for tape or sealing equipment.
The 2-inch gusset accommodates documents, catalogs, soft goods, product samples, and other moderately thick contents without compromising envelope-style handling. These envelopes are rated for First Class mail compatibility, making them practical for publishers, retailers, healthcare distributors, and direct-mail operations that need a durable, postage-eligible format for outgoing shipments.
Envelopes are sold in cases of 100. Interior dimensions are 16" L x 12" W with a 2" expandable gusset depth. Cases ship via parcel carrier.
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