Dupont QUAR4500 Tyvek Expansion Envelope 10x13 100 Pack

Product Description

The DUPONT QUAR4500 is a Tyvek expansion mailing envelope designed for shipping and mailing applications that require durability beyond standard paper envelopes. Constructed from DuPont Tyvek material, these envelopes resist tearing, moisture, and puncture under normal handling conditions. The self-seal closure eliminates the need for separate adhesive or tape, speeding up packing workflows. Each envelope measures 10 inches wide by 13 inches long with an expansion gusset to accommodate bulkier contents. This box contains 100 envelopes, making it suited for high-volume shipping operations, mailrooms, and professional service businesses.

These envelopes are commonly used in commercial mailrooms, professional offices, and distribution environments where documents, catalogs, parts lists, or lightweight goods need secure, tamper-resistant packaging. The 10-inch by 13-inch format accommodates standard letter-size and legal-size documents without folding. The expansion design allows thicker contents such as booklets, multi-part forms, or small components to fit without straining the seal. The self-seal strip provides a secure, clean close for outgoing shipments processed in volume.

Key Features

• Tyvek construction resists tearing, moisture, and puncture during transit
• Self-seal closure for fast, tape-free packing
• Expansion gusset accommodates bulkier or multi-item contents
• 10 inches wide by 13 inches long fits letter and legal documents without folding
• White finish for clean, professional appearance
• Sold in a box of 100 envelopes for high-volume use

Compatibility

Designed as a standard Tyvek expansion mailing envelope compatible with typical USPS, UPS, FedEx, and private carrier mailing requirements for non-rigid flat or lightly padded contents.

Installation Notes

No tools are required for use. Peel the self-seal strip liner completely before pressing the flap firmly for a secure close. Do not overfill beyond the expansion capacity, as overstuffing can compromise the seal integrity. For regulated or hazardous material shipments, consult applicable carrier and DOT guidelines for approved packaging.