White Tyvek® 18lb 12 x 16 x 4 Expansion Envelopes with Peel and Seal
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White Tyvek® 18lb 12 x 16 x 4 Expansion Envelopes with Peel and Seal
Product Details
Product Details
For thick stacks and oversized materials, JAM Paper White Tyvek® 18lb 12 x 16 x 4 inch Expansion Envelopes with Peel and Seal, manuals, catalogs, booklets, files, and bulky document groups that need to stay flat, protected, and easy to manage. Crafted from strong 18lb Tyvek, these white mailing envelopes resist tears, moisture, and surface damage better than many standard envelopes, making them useful for shipping, filing, storage, and heavy duty office organization. The bright white finish adds a clean professional look that works well for mailrooms, schools, business mailing, creative supply packing, and archive use. A peel and seal closure keeps prep fast and simple, so JAM Paper makes this expansion envelope a dependable choice for larger mailing jobs that need extra room and reliable protection.
- Height: 16 inches
- Width: 12 inches
- Finish: Smooth
- Material: Tyvek
- Paper weight: 18
- Closure: Peel & Seal
- Flap: Straight Flap
- Envelope size: 12 x 16
- Envelope seam: Center
- Envelope opening: Open End
Turnaround Time
Processing time
- Standard Plain Processing Time
1 - 2 Days
- Custom Print Order Processing
5 - 7 Days
Shipping/transit time is based on the shipping method selected at checkout and begins once the order has completed processing and ships. Visit our shipping policy page for more information.
Return Policy
Returns, exchanges or refunds are accepted when received back within 30 days of purchase.
Please note that custom-made products are uniquely tailored to your specifications, and as such, we are unable to accept returns for these items.
Visit our Returns page for more information on how initiate a return.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Shipping Information
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Customer Support
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FAQ’s
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Contact Us
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FAQs
Where can I learn about custom orders and sample availability?
For custom orders, please fill out our free quote request form.
View our Samples FAQ
How can I better understand stationery sizes and types?
To help navigate your stationery options (and our recommendations), check out our comprehensive guides on paper weights and envelope sizes, including free, downloadable templates compatible with Microsoft Word.
Visit the Size Guide
How can I reorder items?
Reordering is a breeze! Simply sign in to your account and click the "Reorder" button.
Can I change or cancel my order?
If you are looking to change or cancel your order before processing, please reach out to us and we would be happy to help you.
Once your order has been processed for shipping—or has already shipped—it cannot be canceled. You may refuse the delivery, and the order will be subject to our return policy.
Reseller program payment authorization help
If there’s a reseller program credit card authorization issue, your order will be placed on hold, and our team will contact you immediately to resolve the problem so your envelopes can ship as quickly
as possible.