Ship small items with confidence using these 6x6x4 kraft corrugated mailers constructed from durable ECT-32-B material. One-piece fold-and-tuck design requires no tape, glue, or staples‚assembly takes seconds. Bundle of 50 ships and stores flat, maximizing warehouse efficiency and reducing freight costs.
In Stock SKU: M664K

6x6x4 Kraft Corrugated Mailers - ECT-32-B, Bundle of 50

6x6x4 Kraft Corrugated Mailers - ECT-32-B, Bundle of 50. 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 6 x 4 in; material kraft; sold as Bundle of 50. Confirm SKU, pack count, price, availability, and checkout delivery before ordering.

$60.95 / BUNDLE (50 PER BUNDLE)
Order timing and shipping options show at checkout
Delivery shown at checkout
Confirm this specSKU M664K

6x6x4 Kraft Corrugated Mailers - ECT-32-B, Bundle of 50: 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 6 x 4 in
Material
ECT-32-B Corrugated
Color
Kraft
Sold as
BUNDLE (50 PER BUNDLE)
Freight class
125
Material
ECT-32-B Kraft Corrugated
Dimensions
6 x 6 x 4 inches
Quantity Per Bundle
50 boxes
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.

Check before ordering

Confirm size, material, fit, sold-as quantity, SKU, price, availability, and checkout delivery before ordering.

Buying a larger quantity, matching this to an existing SKU, or setting up a repeat order?

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Secure checkout | Delivery shown at checkout |

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 Kraft Corrugated
Dimensions6 x 6 x 4 inches
Quantity Per Bundle50 boxes
Assembly RequiredNone - Fold-and-Tuck Design
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 (Edge Crush Test) 32-B indicates the corrugated can withstand 32 lbs of crushing force per linear inch of edge. This mid-range rating is ideal for small parcels and light-to-medium weight items. Higher ECT (42-B, 44-B) suits heavier freight; lower ECT (20-B) works for minimal-protection applications.

Flat-stored kraft mailers consume up to 40% less cubic footage than pre-assembled boxes of equivalent size. For operations managing 10,000+ units monthly, this translates to reclaiming valuable warehouse real estate and reducing facility overhead costs.

Yes. The ECT-32-B double-wall construction and fold-and-tuck design create crush-resistant stacking performance. These mailers maintain structural integrity under standard pallet loads and multi-tier stacking in trucks and freight containers.

The compact 6x6x4" footprint reduces dimensional weight charges on most carrier networks while accommodating 85% of small e-commerce parcels. This size optimizes pallet utilization and carrier fees, delivering 8-12% lower shipping costs per unit versus oversized boxes.

Technical Specifications

Quantity Per Bundle50 boxes
Assembly RequiredNone - Fold-and-Tuck Design
RecyclableYes
Color Kraft
Strength / Material ECT-32-B Corrugated
Dimensions (Internal) 6"" × 6"" × 4"" (L × W × H)

Product Downloads

Shipping Information

Outer Carton Dimensions

25.25" × 19.0" × 6.0" (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

Pick the right material, size, and gauge before you order.

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

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