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Five flat kraft corrugated boxes 18 by 6 by 6 inches

Durable Packaging B-1866-5 Corrugated Shipping Boxes 18 x 6 x 6 in 5-Pack 200 lb

SKU CH-ZSH0-KH3P7

Pack of five 18 x 6 x 6 inch corrugated boxes rated at 200 lb bursting strength, shipped flat for easy storage

  • Surface finishKraft Paper
  • Key featuresCardboard, IDL Packaging, Kraft, 18 × 6 × 6 in (Long Boxes),
  • Product colorKraft
  • Size details.25 in
  • Sold as18 × 6 × 6 in (Long Boxes)
  • Pack quantity18 × 6 × 6 in (Long Boxes)
  • 200 lb burst strength protects heavy items during transit
  • Corrugated fluted layer cushions contents against shocks
  • Flat-packed bundles store compactly until needed
  • Quick assembly speeds up packing workflow
  • USPS, UPS and FedEx accepted for reliable shipping

Durable Packaging B-1866-5 Shipping Boxes

These corrugated cardboard boxes measure 18 x 6 x 6 inches and arrive in a pack of five. They are built for professional shipping and moving tasks where extra strength matters. The 200 lb burst strength rating exceeds regular box standards for heavier loads. Small businesses and households can rely on them for USPS, UPS and FedEx shipments.

Flat Storage and Quick Assembly

Boxes ship flat at 24.25 L x 12.75 W x 1.5 H inches to minimise storage space. Assembly is fast and requires no tools before packing begins. Kraft paper finish provides a smooth surface for labels and tape adhesion. Lightweight construction keeps parcel weight down while maintaining rigidity.

200 lb Burst Strength Rating

The single specification that decides fit is the 200 lb burst strength, which handles heavier contents than standard boxes. Buyers needing higher burst ratings or larger internal dimensions should look elsewhere. This pack suits items that demand extra crush resistance during transit.

How it compares

Measured against everything we stock in Packing Materials & Shipping Labels, at today’s prices. Recalculated every night.

Price $25.99
Cheaper than about 79% of the 3,067 comparable items (median $52.99).

Specifications

Product
Brand nameDurable Packaging
Model nameB-1866-5
Product colorKraft
Size & build
Surface finishKraft Paper
Size details.25 in
In the box
Pack quantity18 × 6 × 6 in (Long Boxes)

Questions about this item

How do I assemble the 18 x 6 x 6 inch flat boxes and what step is often missed?

Fold the scored flaps on the 24.25 L x 12.75 W flat blank, then tape the centre seam and both end seams; the step often missed is sealing the bottom centre seam before loading.

When will the 200 lb bursting-strength corrugated material need replacement?

Replace a box if the fluted layer is crushed, the Kraft liners tear, or moisture weakens the bond; intact boxes can be reused many times.

What limit appears first when a loaded box is stacked under sustained weight?

The 200 lb bursting strength is the first limit; exceeding it risks sudden rupture of the corrugated walls.

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