Ideal for e-commerce businesses, logistics operators, and B2B shippers who need professional, compliant document protection during transit. These 4 1/2" x 6" red poly envelopes with pre-printed "Invoice Enclosed" messaging ensure shipping documents stay secure, organized, and visible, reducing fulfillment errors while maintaining a polished brand appearance.
Best For
How to Choose the Right Packaging
Specs at a Glance
| Material | 2 Mil Polyethylene |
| Dimensions | 4 1/2" W x 6" H |
| Closure Type | Adhesive-Backed (Self-Sealing) |
| Color | Red with Pre-Printed "Invoice Enclosed" Text |
| Recyclable | Yes |
Common Use Cases
- E-commerce order fulfillment with integrated invoice protection Logistics and 3PL shipping document compliance B2B wholesale distribution and order documentation Return shipment invoice and RMA tracking Multi-carrier shipping operations (FedEx, UPS, USPS compatible)
What You'll Receive
- 1,000 adhesive-backed "Invoice Enclosed" envelopes per case Pre-printed red poly envelopes ready to use
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
Yes. The 4 1/2" x 6" size and "Invoice Enclosed" marking meet FedEx, UPS, and USPS document pouch standards, reducing scanning delays and ensuring carrier compliance without additional labeling.
2 mil poly provides excellent moisture resistance and tear strength for standard domestic and light international shipping. For extreme weather or repeated handling, consider upgrading to 3 mil thickness.
Custom imprinting options are available for bulk orders. Contact our sales team for pricing on branded or specialized messaging (minimum order quantities apply).
Polyethylene envelopes remain stable for 2+ years when stored in cool, dry conditions away from direct sunlight. The adhesive backing maintains strength throughout standard warehouse storage.
Technical Specifications
| Material | 2 Mil Polyethylene |
| Dimensions | 4 1/2" W x 6" H |
| Closure Type | Adhesive-Backed (Self-Sealing) |
| Color | Red with Pre-Printed "Invoice Enclosed" Text |
| Recyclable | Yes |
| Color | Red |
| Strength / Material | 2 Mil Poly |
| Dimensions (Internal) | 4 1/2"" × 6"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
10.0" × 7.5" × 4.75" (L × W × D)
Unit of Measure
CASE
Qty Per Shipping Unit
1000 PER CASE
LTL Freight Class
Class 60
Carrier Eligibility
UPS Ground & Freight Eligible
TRUST & RELIABILITY
Product Support
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Buyer guides
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