18x18x18 Double-Wall Shipping Boxes

18x18x18 Double-Wall Shipping Boxes

Not sure which to pick? Use the Box Size Calculator to get a recommendation.

Parent category: Corrugated Boxes Buying Guide

18x18x18 double-wall corrugated boxes — two-layer walls used for heavy freight, export, and crush-sensitive shipments.

Quick facts

In-stock SKUs 3
Total options 3
Price from $43.98
Price to $128.97
Average price $80.33
Materials corrugated, kraft
Strengths ECT-48, ECT-71
Pack quantities 10

In-stock options

When to use

  • Shipping rigid goods that fit 18x18x18__double_wall inches (L x W x H).
  • Orders where dimensional weight matters — this size avoids wasted cube.
  • Bulk case packs for 3PLs, Amazon FBM, and DTC fulfillment lines.

When not to use

  • Goods significantly smaller than 18x18x18__double_wall — you pay for wasted void.
  • Items over 50 lb — step up to ECT-44 or ECT-48 double-wall.

Frequently asked

When should I use 18x18x18 double-wall boxes?

18x18x18 double-wall corrugated boxes — two-layer walls used for heavy freight, export, and crush-sensitive shipments.

Are these in stock and ready to ship?

Yes — 3 in-stock SKUs. Live inventory and case-pack pricing are on each listing.

Can I also see other box variants at this size?

Yes — see the full [/18x18x18-boxes](/factory/exact_size_box/18x18x18-boxes) page for every 18x18x18 option regardless of material or strength.

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