Lightweight yet durable ECT-32-B corrugated mailers in 6x4x3" dimensions. One-piece fold-and-tuck design requires no tape, glue, or staples‚assemble in seconds while maintaining crush-resistant double-wall protection on front and sides. Sold as 50-count bundle for maximum volume savings.
In Stock SKU: M643

6x4x3 White Corrugated Mailers ECT-32-B, 50/Bundle

6x4x3 White Corrugated Mailers ECT-32-B 50/Bundle. Use this item for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Listed specs include size 6 x 4 x 3 in; material corrugated; sold as Bundle of 50. Confirm SKU, pack count, price, availability, and checkout delivery before ordering.

$23.88 / BUNDLE (50 PER BUNDLE)
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Confirm this specSKU M643

6x4x3 White Corrugated Mailers ECT-32-B 50/Bundle: compare by inside dimensions, board type, closure, color, and case quantity. Confirm SKU, sold-as unit, price, availability, and checkout delivery before ordering.

Size
6 x 4 x 3 in
Material
ECT-32-B Corrugated
Color
White
Sold as
BUNDLE (50 PER BUNDLE)
Freight class
125
Material
ECT-32-B White Corrugated Paperboard
Dimensions
6" L x 4" W x 3" H
Box Style
One-Piece Fold-and-Tuck Mailer
Good fit for

Good fit for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Confirm inside dimensions, board type, closure, color, and whether the item needs extra cushioning.

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SKU
M643
Product
6x4x3 White Corrugated Mailers ECT-32-B, 50/Bundle
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Confirm dimensions, material, pack count, price, and availability on this page before ordering.

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Best For

Good fit for shipments or presentation packs where the product fits the listed inside dimensions and closure style. Confirm inside dimensions, board type, closure, color, and whether the item needs extra cushioning.

How to Choose the Right Packaging

The buying decision should be based on the exact inside dimensions, board type, closure, color, and case quantity, not the category name alone. Use the current product page as the source of truth for SKU, variant, price, availability, sold-as unit, and checkout delivery.

Specs at a Glance

MaterialECT-32-B White Corrugated Paperboard
Dimensions6" L x 4" W x 3" H
Box StyleOne-Piece Fold-and-Tuck Mailer
Quantity Per Bundle50 Units
RecyclableYes
Common Use Cases
  • Packing small ecommerce orders, kits, samples, gifts, documents, or parts in a folding mailer box.
  • Standardizing a branded or unbranded mailer-box size for repeat shipments.
  • Reordering by exact product link, SKU, or sold-as quantity.
  • Adding the item to a mixed-SKU or recurring supply request when quantity, delivery ZIP code, or timing matters.
What You'll Receive
  • This listing is sold as Bundle of 50. Check the current product page for variant details, price, availability, and pack count before checkout.
Shipping & Packaging

Delivery options and timing are shown at checkout based on item and destination. For larger quantities, freight-sensitive items, mixed-SKU needs, or recurring supply, send the product link or SKU, quantity, delivery ZIP code, receiving notes, and timing to support@packrift.com.

Frequently Bought Together

Related supplies

Frequently Asked Questions

ECT-32-B (Edge Crush Test 32 pounds per linear inch) indicates these mailers can withstand significant stacking pressure without crushing. This rating ensures safe multi-layer pallet storage, reducing damage during distribution and enabling higher-density warehouse configurations that lower fulfillment costs.

Yes. The one-piece fold-and-tuck design requires no tape, glue, or staples, boxes assemble in seconds by hand or automated equipment. This reduces per-unit assembly labor by 30-50% and eliminates supply chain dependencies on adhesive materials.

These 6" x 4" x 3" mailers are optimized for single lightweight items under 5 lbs due to their ECT-32 rating. For heavier products or volume consolidation, consider larger formats with higher ECT ratings (ECT-44 or ECT-48) available in our product catalog.

At just 6" x 4" x 3" (72 cubic inches), these mailers fall well under dimensional weight thresholds for most carriers, avoiding billable dimensional weight surcharges. The lightweight paperboard (ECT-32-B) further reduces actual weight, maximizing freight efficiency per pallet and reducing per-shipment carrier costs.

Technical Specifications

Box StyleOne-Piece Fold-and-Tuck Mailer
Quantity Per Bundle50 Units
RecyclableYes
Color White
Strength / Material ECT-32-B Corrugated
Dimensions (Internal) 6"" × 4"" × 3"" (L × W × H)

Product Downloads

Shipping Information

Outer Carton Dimensions

18.0" × 14.75" × 5.75" (L × W × D)

Unit of Measure

BUNDLE

Qty Per Shipping Unit

50 PER BUNDLE

LTL Freight Class

Class 125

Delivery Method

Shown at checkout

ORDER SUPPORT

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.

Secure checkout LTL freight available on case/skid orders

Buyer guides

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Measure inside and outside dimensions before choosing shipping supplies or estimating DIM-weight costs.

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