9.5x12.5" White Tyvek Self-Seal Envelopes - Tear & Moisture Resistant, Case of 100
$53.28
/ case of 100$0.53 per mailer
Request bulk pricing
Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
9 1/2" × 12 1/2"
Board / material
14 lb. Olefin
Color
White
Freight class
Class 78
Specifications
| Inside dimensions | 9 1/2" × 12 1/2" (L × W) |
|---|---|
| Board / material | 14 lb. Olefin |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 1 |
| Case weight | 3.2 lb |
| Outer carton (shipping) | 13.25 × 10.5 × 4.75 in |
| LTL freight class | Class 78 |
| GTIN | 841436091084 |
| SKU | TYF091212WH |
About this item
SKU TYF091212WH — 9 1/2" × 12 1/2", 14 lb. Olefin, White. Sold as a case of 100, shipped from US warehouses.
The 9.5x12.5" White Tyvek Self-Seal Envelopes - Tear & Moisture Resistant is a shipping mailer for documents, catalogs, apparel, small parts, photos, and lightweight e-commerce orders. Listed specs include size 9.5" x 12.5"; Tyvek material; case of 100. Use it as a mailing envelope, poly mailer, padded mailer, or flat document shipper when the item fits the listed size.
Common questions
How does Tyvek® compare to kraft paper envelopes for durability?
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.
Do these envelopes meet USPS, UPS, and FedEx shipping compliance?
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.
What is the self-seal mechanism and how long does it last?
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.
Are bulk purchases available at volume discounts?
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.
Order support
Questions on specs or freight?
Send the SKU, quantity, and delivery ZIP and we will confirm specs, availability, and freight before you order.