- Dimensions: 12" x 16" x 4" exterior
- Material: 18 lb Olefin
- Quantity: 50 envelopes per case
- Weight: Approximately 4.46 lbs per case
- Shipping: Parcel eligible
These 12 x 16 x 4 inch white expandable Tyvek® envelopes are built from 18 lb olefin, a spunbonded polyethylene material that delivers puncture, tear, and moisture resistance well beyond standard paper mailers. The 4" side gusset expands to accommodate bulky flat contents while maintaining a clean, professional exterior.
The open-side loading configuration makes these envelopes practical for catalogs, multi-document sets, soft goods, folded apparel, and packaged components that exceed the capacity of standard flat mailers. They are commonly used in corporate mailrooms, e-commerce fulfillment operations, healthcare distribution, and publishing environments.
The self-seal adhesive strip closes securely without tape or additional equipment, reducing packing time at the station. Each case contains 50 envelopes, and the product ships via parcel carrier.
- Strength Material:
- 18 lb. Olefin
- Shipping Unit:
- 50 PER CASE
- Width:
- 12.00"
- Height:
- 16.00"
- Depth:
- 4.00"