Ideal for warehouse managers and fulfillment directors shipping small, lightweight items under 2 lbs, jewelry, cosmetics, electronics accessories, and fragile goods. The 4 3/8" x 4 3/8" x 2 1/2" dimension maximizes USPS Priority Mail and regional carrier efficiency while ECT-32-B corrugated construction delivers crush-resistant protection without excess weight that increases postage costs.
Best For
How to choose
Specs at a Glance
| Material | ECT-32-B White Corrugated (32 ECT rating) |
| Dimensions | 4 3/8" L x 4 3/8" W x 2 1/2" H |
| Design Type | One-Piece Fold-and-Tuck Mailer |
| Quantity Per Bundle | 50 Units |
| Recyclable | Yes |
Common Use Cases
- Small parcel shipping for e-commerce fulfillment centers Fragile item protection for cosmetics, jewelry, and accessories USPS Priority Mail and regional carrier compliance Same-day assembly and packing operations High-volume direct-to-consumer shipping with minimal waste
What You'll Receive
- 50 white corrugated mailers (pre-scored, ready to fold) No assembly hardware required
Shipping & Packaging
Frequently Asked Questions
ECT (Edge Crush Test) 32-B means this corrugated material withstands 32 lbs of crush force per inch of edge length in both machine and cross directions. For small parcels under 5 lbs, this rating delivers protection during sorting, stacking, and transit while keeping material costs and weight-based shipping charges minimal.
Assembly takes 3, 5 seconds per unit with zero additional supplies. Compared to glued or taped boxes, you eliminate tape gun operation, adhesive inventory management, and quality control checks, saving 30, 40% labor time on high-volume packing lines. One-piece construction also reduces damage-in-warehouse incidents from tape misalignment.
Yes. When folded flat, 50-unit bundles occupy minimal shelf space (approximately 8" x 6" x 4"). The rigid ECT-32-B corrugated supports stable stacking of multiple bundles without compression, maximizing vertical storage and reducing picking time during fulfillment operations.
Yes. At 4 3/8" x 4 3/8" x 2 1/2", these mailers fall within USPS Priority Mail, UPS Ground, and FedEx Home Delivery maximum dimensions, eliminating oversized surcharges. The compact form factor is optimized for regional parcel networks, ensuring predictable freight and handling costs at scale.
Technical Specifications
| Design Type | One-Piece Fold-and-Tuck Mailer |
| Quantity Per Bundle | 50 Units |
| Recyclable | Yes |
| Color | White |
| Strength / Material | ECT-32-B Corrugated |
| Dimensions (Internal) | 4 3/8" × 4 3/8" × 2 1/2" (L × W × H) |
Shipping Information
Outer Carton Dimensions
4 3/8" × 4 3/8" × 2 1/2" (L × W × H)
Unit of Measure
BUNDLE
Qty Per Shipping Unit
50 PER BUNDLE
LTL Freight Class
Class 125
Delivery Method
Shown at checkout
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ORDER SUPPORT
Product Support
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4 3/8 x 4 3/8 x 2 1/2" ECT-32 White Corrugated Mailers - 50/Bundle
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