6 3/8 x 4 in 28 lb Kraft Clasp Envelopes Reusable 1000/Case
$387.61
/ case of 1000$0.39 per mailer
Request bulk pricing
| Quantity (case) | Item-subtotal discount |
|---|---|
| 1–2 | Base item price |
| 3–5 | 3% off qualifying item subtotal |
| 6+ | 5% off qualifying item subtotal |
In stock · ships within 1 business day from the nearest of 5 US warehouses (IL, PA, TX, GA, CA) · 1–5 business days in transit · freight calculated at checkout · free ground shipping on orders over $99 (parcel rates up to $29.95) and over $500 (up to $120)
30-day returns on stock items · Return policy
Inside dimensions
6 3/8" × 4"
Board / material
28 lb. Woven Paper
Color
Kraft
Freight class
Class 78
Specifications
| Inside dimensions | 6 3/8" × 4" (L × W) |
|---|---|
| Board / material | 28 lb. Woven Paper |
| Color | Kraft |
| Sold as | Case of 1000 |
| Physical units per order increment | 1 |
| Case weight | 12.44 lb |
| Outer carton (shipping) | 20.5 × 9.75 × 9.5 in |
| LTL freight class | Class 78 |
| GTIN | 085227378149 |
| SKU | EN1014 |
About this item
SKU EN1014 — 6 3/8" × 4", 28 lb. Woven Paper, Kraft. Sold as a case of 1000, shipped from US warehouses.
Heavy-duty 28 lb. woven kraft clasp envelopes with reinforced metal clasps for maximum reusability and cost savings. Bulk case of 1,000 units sized 6 3/8 " x 4 " for mailroom and office packaging needs.
Common questions
Can these envelopes be reused?
Yes. The reinforced metal clasps are designed for repeated opening and closing, making these envelopes cost-effective for internal routing, document circulation, and multi-recipient distributions. The durability of 28 lb. woven paper withstands multiple-use cycles.
What is the best way to seal these envelopes permanently?
Moisten the gummed flap and press closed firmly. This creates a secure, tamper-evident seal suitable for external mailings and shipping-compliant applications. The clasp may be used for temporary closure or in combination with the gummed flap.
Are these envelopes suitable for USPS, UPS, or FedEx shipping?
Yes. These 6 3/8" x 4" kraft envelopes meet standard carrier dimension and weight requirements for First-Class Mail, Priority Mail, and parcel services. The 28 lb. woven paper provides adequate protection for documents and lightweight items.
Why choose kraft clasp envelopes over standard adhesive mailers?
Kraft clasp envelopes offer three key advantages: reusability (reducing per-use cost), no tape waste, and professional appearance for business correspondence. They eliminate adhesive failure issues and provide a more sustainable alternative to plastic-lined mailers.
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.