12x15.5" White Tyvek Flat Envelopes - Tear Resistant, Case of 100
$70.15
/ case of 100$0.70 per mailer
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Ships from the nearest of 5 US warehouses · freight calculated at checkout
30-day returns on stock items · Return policy
Inside dimensions
12" × 15 1/2"
Board / material
14 lb. Olefin
Color
White
Freight class
Class 78
Specifications
| Inside dimensions | 12" × 15 1/2" (L × W) |
|---|---|
| Board / material | 14 lb. Olefin |
| Color | White |
| Sold as | Case of 100 |
| Order in multiples of | 1 |
| Case weight | 4.5 lb |
| Outer carton (shipping) | 18.5 × 14.25 × 4.75 in |
| LTL freight class | Class 78 |
| GTIN | 50047614217900 |
| SKU | TYF1215WH |
About this item
SKU TYF1215WH — 12" × 15 1/2", 14 lb. Olefin, White. Sold as a case of 100, shipped from US warehouses.
Common questions
Are these envelopes waterproof and moisture-resistant?
Yes. Tyvek® olefin material provides moisture protection, making these envelopes ideal for humid environments and temperature-sensitive shipments. Unlike paper envelopes, they resist water absorption and maintain structural integrity in wet conditions.
How does the self-seal closure work and does it require adhesive?
The integrated Redi-Strip self-seal closure is pre-applied and activated by moistening, similar to envelope flaps. No additional tape or adhesive is required, reducing labor costs and ensuring consistent, tamper-evident seals every time.
Can these envelopes be printed with custom branding?
Yes. Packrift offers both plain white and First Class printed border options. Custom imprinting is available for volume orders, contact our sales team for pricing and lead times.
What makes Tyvek® 10x stronger than paper envelopes?
DuPont's proprietary 14 lb. olefin (Tyvek®) is a non-woven polymer that resists punctures, tears, and abrasion far better than cellulose-based paper. This durability reduces claims and ensures products arrive intact, protecting your brand reputation.
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.