Ideal for shipping managers and fulfillment supervisors who need to protect invoices and packing lists during transit while ensuring compliance visibility. These 4 1/2" x 6" red poly envelopes make enclosed documents instantly recognizable, reducing customer confusion and improving unboxing experience while safeguarding critical shipping paperwork.
Best For
How to Choose the Right Packaging
Specs at a Glance
| Material | 2 Mil Polyethylene (Poly) |
| Dimensions | 4 1/2" W x 6" H |
| Color | Red |
| Quantity Per Case | 1,000 Envelopes |
| Recyclable | Yes |
Common Use Cases
- E-commerce fulfillment centers protecting invoices during multi-parcel shipments Third-party logistics (3PL) providers standardizing document identification across clients Wholesale distributors improving unboxing experience and reducing customer support inquiries Food and beverage suppliers complying with invoice visibility requirements Manufacturing facilities managing internal shipping documentation and returns processing
What You'll Receive
- 1,000 pre-printed red packing list/invoice enclosed envelopes (4 1/2" x 6") Bulk case packaging for efficient warehouse storage and dispensing
Shipping & Packaging
Frequently Bought Together
Bundle & Save 5%Frequently Asked Questions
These are document protector envelopes designed for insertion of loose papers (invoices, packing lists). Most models feature a self-adhesive strip for secure attachment to boxes, verify adhesive type with product specifications. Always test adhesion on your specific packaging material before full deployment.
This SKU features standard pre-printed 'Important Invoice and/or Packing List Enclosed' messaging. Packrift offers customization options on bulk orders (typically 5,000+ units). Contact our sales team for pricing and lead time on branded envelopes.
Polyethylene envelopes provide moisture and tear resistance, protecting documents from water damage during shipping and storage. They're ideal for humid environments, cold chain logistics, and high-moisture warehouse conditions where paper would deteriorate.
Calculate based on your average daily shipments: (Daily Shipments x Business Days x 30) / 1,000 = Cases Needed. Most mid-size fulfillment operations order 3-6 cases monthly. Packrift offers bulk discounts and flexible reorder scheduling to optimize your inventory turnover.
Technical Specifications
| Material | 2 Mil Polyethylene (Poly) |
| Dimensions | 4 1/2" W x 6" H |
| Color | Red |
| Quantity Per Case | 1,000 Envelopes |
| 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
We aim to show product specs, case quantities, and availability clearly. Contact support if an item does not match the listed product details.
Buyer guides
Pick the right material, size, and gauge before you order.