Ideal for e-commerce businesses, fulfillment centers, and logistics operations that ship orders daily and need to include packing lists or invoices securely. These 4 1/2" x 5 1/2" adhesive-backed envelopes made from durable 2 mil poly protect documents from moisture and damage while keeping shipping information visible and organized on the outside of packages.
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Specs at a Glance
| Material | 2 Mil Polyethylene |
| Dimensions | 4 1/2" W x 5 1/2" H |
| Closure Type | Adhesive-Backed |
| Quantity Per Case | 1000 Envelopes |
| Recyclable | No |
Common Use Cases
- E-commerce order fulfillment with enclosed invoices and packing slips Return authorization documentation on shipped packages Shipping label and tracking information protection Promotional material and coupon insertion during packing Multi-channel marketplace order processing and compliance
What You'll Receive
- 1,000 orange 4 1/2" x 5 1/2" adhesive-backed "Invoice Enclosed" envelopes
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
These envelopes accommodate standard 8.5" x 11" documents folded in thirds, plus invoices, packing lists, and tracking information. The 4 1/2" x 5 1/2" opening is designed for typical shipping documentation up to 5-6 pages.
The adhesive is engineered to securely adhere to corrugated boxes, poly mailers, and kraft boxes in warehouse conditions. It withstands standard shipping, handling, and sorting equipment without peeling or lifting during transit.
Yes. The pre-printed "Invoice Enclosed" messaging meets USPS, UPS, and FedEx documentation standards, helping ensure proper handling and reducing claim disputes related to missing paperwork.
We sell these envelopes by the case of 1,000 to provide maximum cost savings. For bulk operations, one case typically supplies 1-2 weeks of standard fulfillment needs, making it the most economical packaging solution.
Technical Specifications
| Material | 2 Mil Polyethylene |
| Dimensions | 4 1/2" W x 5 1/2" H |
| Closure Type | Adhesive-Backed |
| Quantity Per Case | 1000 Envelopes |
| Recyclable | No |
| Color | Orange |
| Strength / Material | 2 Mil Poly |
| Dimensions (Internal) | 4 1/2"" × 5.5"" (L × W × H) |
Product Downloads
Shipping Information
Outer Carton Dimensions
9.75" × 6.5" × 4.5" (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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