Ideal for industrial shippers, e-commerce businesses, and logistics operations requiring maximum durability and weather resistance. These 9 1/2" x 12 1/2" white Tyvek® envelopes protect contents through the toughest shipping conditions while maintaining a professional appearance, making them use for high-value items, documents, and sensitive products that demand protection.
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Specs at a Glance
| Material | 14 lb. Olefin (Tyvek®) |
| Dimensions | 9 1/2" x 12 1/2" |
| Closure Type | Self-Seal with Redi-Strip Technology |
| Quantity per Case | 100 Envelopes |
| Recyclable | Yes |
Common Use Cases
- E-commerce order fulfillment and direct mail campaigns Shipping sensitive documents, contracts, and confidential materials Medical device, pharmaceutical, and laboratory specimen transport High-value product protection requiring tamper evidence and moisture resistance International shipping and weather-exposed logistics operations
What You'll Receive
- 1 case containing 100 white Tyvek® flat envelopes (9 1/2" x 12 1/2") Pre-applied self-seal adhesive strip on all units
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
Tyvek® envelopes are ten times stronger than paper alternatives, providing puncture and tear resistance. The 14 lb. olefin material resists moisture, humidity, and environmental stress that would compromise paper envelopes, making them ideal for challenging shipping conditions and long-distance transport.
Yes. The 9 1/2" x 12 1/2" flat format meets standard First Class Mail and Priority Mail specifications. The self-seal closure provides tamper evidence and secure sealing required by all major carriers. Available in plain or First Class printed border formats for enhanced compliance visibility.
The integrated Redi-Strip self-adhesive closure requires no water activation or additional tape. Simply peel and seal for instant closure. The adhesive bond strengthens with time and resists separation during shipping, handling, and storage, maintaining integrity throughout the product lifecycle.
Yes. Packrift offers tiered pricing on multi-case purchases. Contact your account representative for custom quotes on orders exceeding 10 cases. Volume discounts apply to all standard formats, including plain and printed border options.
Technical Specifications
| Material | 14 lb. Olefin (Tyvek®) |
| Dimensions | 9 1/2" x 12 1/2" |
| Closure Type | Self-Seal with Redi-Strip Technology |
| Quantity per Case | 100 Envelopes |
| Recyclable | Yes |
| Color | White |
| Strength / Material | 14 lb. Olefin |
| Dimensions (Internal) | 9 1/2"" × 12 1/2"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
13.25" × 10.5" × 4.75" (L × W × D)
Unit of Measure
CASE
Qty Per Shipping Unit
100 PER CASE
LTL Freight Class
Class 78
Carrier Eligibility
UPS Ground & Freight Eligible
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Product Support
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Buyer guides
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