Heavy-duty 28 lb. woven kraft clasp envelopes with reinforced metal clasps for maximum reusability and cost savings. Secure gummed flap design ensures permanent seals for shipping compliance. Bulk case of 1,000 units sized 6 3/8" x 4" for mailroom and office packaging needs.

In stock SKU EN1014

6 3/8" x 4" Kraft Clasp Envelopes, 28 lb. Woven - Reusable, Case of 1000

Name: 6 3/8" x 4" Kraft Clasp Envelopes, 28 lb. Woven - Reusable, Case of 1000
Brand: Packrift
SKU: EN1014
Price: 342.88 USD
Availability: InStock

$342.88/ CASE

$0.34 per unit

Sold in CASE of 1000

Specifications

SKU	EN1014
Dimensions	6 3/8" × 6 3/8" × N/A
Material / strength	28 lb. Woven Paper
Sold as	CASE of 1000
Brand	Packrift
Freight class	78
GTIN	85227378149

Shipping & returns

Packrift ships from five US warehouses (Central IL, Northeast PA, South TX, Southeast GA, West CA). The nearest warehouse with stock ships your order. Final shipping cost is shown at checkout based on weight, dimensions, and ZIP.

Oversized or high-volume orders may route via LTL freight; the freight quote is calculated live at checkout.

Shipping policy · Refund policy · Support

Best For

Ideal for busy mailrooms, administrative departments, and small-to-medium businesses that need reliable, reusable mailing solutions. These 6 3/8" x 4" kraft clasp envelopes offer professional document protection with cost-efficiency, as their reinforced metal clasps enable multiple-use cycles, reducing per-mailing expenses while maintaining secure delivery compliance.

How to choose

Built from durable 28 lb. woven kraft paper, these envelopes combine strength with affordability for high-volume mailing operations. The reinforced metal clasp mechanism provides secure closure without tape, while the gummed flap offers a permanent seal option, making these envelopes ideal for both routine inter-office distribution and shipping-compliant external mailings.

Specs at a Glance

Material	28 lb. Woven Kraft Paper
Dimensions	6 3/8" W x 4" H
Color	Natural Kraft
Closure Type	Reinforced Metal Clasp with Gummed Flap
Recyclable	Yes

Common Use Cases

Inter-office document distribution and routing Secure invoice and payment transmittal Compliance document mailing Repetitive-use mailroom operations (single-use or reusable) Small parts and lightweight product packaging

What You'll Receive

1 case of 1,000 4 x 6 3/8" kraft clasp envelopes

Shipping & Packaging

Ships in bulk case quantity (1,000 units) designed for efficient warehouse storage and high-volume dispensing. Standard industrial packaging minimizes dimensional weight charges while protecting envelope condition in transit.

Frequently Asked Questions

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.

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.

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.

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.

Technical Specifications

Closure Type	Reinforced Metal Clasp with Gummed Flap
Recyclable	Yes
Color	Kraft
Strength / Material	28 lb. Woven Paper
Dimensions (Internal)	6 3/8" × 6 3/8" (L × W × H)

Shipping Information

Outer Carton Dimensions

6 3/8" × 6 3/8" (L × W × H)

Unit of Measure

CASE

Qty Per Shipping Unit

1000 PER CASE

LTL Freight Class

Class 78

Delivery Method

Shown at checkout

Processing and delivery timelines vary by product, warehouse, order size, and destination. Freight-sensitive or oversized items may require LTL delivery or a custom quote before shipment.

Checkout shows available shipping options for the selected SKU and quantity. Use the shipping and refund policy links for current policy details before ordering.

For larger, recurring, freight-sensitive, or mixed-SKU orders, send the SKU or product link, quantity, delivery ZIP code, receiving notes, and timing to support@packrift.com.

ORDER SUPPORT

Product Support

Specs, case quantities, and availability are listed on each product page. For bulk, mixed-SKU, or LTL freight orders, email support@packrift.com with the SKU, quantity, and delivery ZIP.

Use product support for fit, larger or recurring order, return, or order-issue questions. When price and Add to Cart are shown, checkout remains the direct ordering path.

Need a sample, fit check, or substitution review? Contact product support with the SKU, selected option, order quantity, and use case. Support will confirm the available path for that item.

Contact product support

Secure checkout LTL freight available on case/skid orders

Buyer guides

Buying notes and spec resources stay here instead of taking space above the cart.

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Use this product as the source 6 3/8" x 4" Kraft Clasp Envelopes, 28 lb. Woven - Reusable, Case of 1000

Compare resources using the current product page data: SKU EN1014 , type Envelopes & Mailers , sold-as unit CASE / pack count 1000 PER CASE . Confirm the product page price, availability, and selected variant before ordering.

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