4 1/2 x 6" Red "Important Invoice and/or Packing List Enclosed" Envelopes
- Opens along the first dimension (unless otherwise noted).
Stock Number | 1 | 3 | 5 | 10+ | Add to Cart |
|---|---|---|---|---|---|
| Stock NumberPL418 | 1$45.34 | 3$45.34 | 5$45.34 | 10+$45.34 | Add to Cart |

Outside Dimensions: 4 1/2 x 6"
Face: Full
Opening: Side
Color: Red
Quantity Per Case: 1000
Order in Multiples of: 1
Freight Class: 60
Weight: 7.28 EA
NMFC Code: 20475-11
Ships Parcel: Yes
These 4-1/2 x 6" envelopes feature full-face red printing with "Important Invoice and/or Packing List Enclosed" in bold text, making attached documents immediately recognizable during inbound processing. The red background creates strong visual contrast against corrugated boxes, poly mailers, and other common outer packaging materials.
These envelopes are used in e-commerce fulfillment, retail distribution, manufacturing, and import/export operations to keep invoices, packing slips, customs declarations, and shipping instructions securely attached to outbound shipments. The side opening along the 4-1/2" dimension allows fast document insertion during high-volume pack-out workflows without reorienting the envelope.
Envelopes measure 4-1/2 x 6" exterior and are sold in cases of 1,000. Consistent, high-visibility labeling on every package helps receiving teams locate documentation quickly and supports compliance with shipment documentation requirements across supply chains.
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