Why Pallet Dimensions Matter More Than Weight

Many freight operations optimize for weight. "This truck can hold 40,000 lbs. How many pallets fit?" But that's the wrong optimization metric.

Trucks are constrained by volume, not weight. A fully-loaded truck (that can't take another pallet) is often 10-20% lighter than its 40,000 lb weight limit.

This matters because dimensional pricing (which penalizes volume over weight) is becoming standard.

The cube problem

A typical truck has 2,400 cubic feet of usable space.

Pallet A: 3,000 lbs, 40 cubic feet (dense freight: metals, machinery)

Pallet B: 1,500 lbs, 40 cubic feet (light freight: pillows, foam)

You can fit:

• 80 pallets of type A = 240,000 lbs (weight-limited, only 3,200 cubic feet used)
• 60 pallets of type B = 90,000 lbs (volume-limited, all 2,400 cubic feet used)

Pallet B shipments run into volume constraints before weight constraints. If you're charging by weight, you're underutilizing your truck. If you're charging by dimensional weight, you're charging a premium for low-density freight.

The carrier's question: "Why should I be penalized for your low-density shipment?"

Dimensional weight pricing

Most carriers (UPS, FedEx, DHL) use dimensional weight (DW) for parcel and some LTL shipments:

• Dimensional weight = (Length x Width x Height) / Divisor
• Divisor varies (usually 166-194 for parcel, 166 for LTL)
• You pay for whichever is greater: actual weight or dimensional weight

Example:

• Box: 24" x 12" x 12" = 3,456 cubic inches
• DW = 3,456 / 166 = 20.8 lbs
• Actual weight: 8 lbs
• You pay for 20.8 lbs (dimensional weight)

A lightweight, bulky shipment is more expensive than a heavy, dense shipment of the same size.

The economics of density

If you're shipping low-density freight (pillows, foam, clothing), you have three options:

Option 1: Accept dimensional pricing

• Your shipment is priced by volume, not weight
• Cost per lb is high
• This is what most shippers do

Option 2: Compress before shipping

• Vacuum-seal boxes, use compactors, reduce volume
• Lower dimensional weight = lower cost
• Cost: time and equipment (vacuum sealers, compacting machine)

Option 3: Accept lower density and use pool points

• Don't ship directly. Ship to a regional pool point (consolidation hub)
• Wait until you have multiple shipments to the same region
• Ship a full truckload (or nearly full) from pool point to final destination
• Cost: pool point fees (usually 5-10% of freight cost) + longer shipping time

For most shippers, Option 1 is too expensive. Options 2 and 3 require infrastructure.

What this means for your supply chain

For manufacturers: If you're shipping low-density products, negotiate with your 3PLs: "Can you compress before shipping?" or "Can you use pool points?" Ask for dimensional weight reduction explicitly in your RFPs.

For retailers: When negotiating with suppliers, understand their packaging. If they're using oversized boxes (for protection, not necessity), you're paying dimensional weight premiums. Suggest smaller boxes with better cushioning.

For 3PLs: If you're handling low-density freight, add a compression or pool point service to your offering. Shippers will pay for it if it reduces their costs.

For LTL carriers: Dimensional weight is now standard in your industry. Make sure your customers understand it and know how to optimize against it.

Why it matters now

As transportation costs have risen and carrier pricing has become more sophisticated, dimensional weight has become a lever for optimization. Shippers who ignore it are leaving money on the table. Those who optimize (through compression, pool points, or better packaging) will have a cost advantage.