LTL Weight & Size Limits for Shippers

LTL carriers accept a wide range of freight, but every carrier sets boundaries on how heavy, how tall, and how large a single shipment can be. Exceeding those limits does not always mean your freight gets refused. It often means unexpected fees show up on your invoice or your shipment gets rerouted to a more expensive pricing tier. Your freight class assignment also affects which tier applies.

Knowing the thresholds before you book prevents surprises and helps you make better decisions about when LTL is the right mode and when truckload or another option makes more sense. For a complete breakdown of the LTL network, see our LTL shipping guide.

Standard LTL Weight and Size Limits

The limits below reflect the policies of most major national LTL carriers. Regional carriers may vary, and some carriers publish specific exceptions for certain freight types. Always confirm limits with the carrier or your freight broker before tendering an oversized or overweight shipment.

Minimum Weight

LTL carriers generally accept shipments starting around 100 lbs, though minimums vary by carrier. The bigger question is cost-effectiveness: if your shipment is under 50 lbs, LTL is often not the cheapest option, and parcel carriers (UPS, FedEx) are usually faster and less expensive because their networks are optimized for small package volume. For very light freight that fits in boxes, price parcel before booking LTL.

Maximum Weight

The upper weight limit for standard LTL pricing is typically up to 20,000 lbs per shipment. Above 10,000 lbs, most carriers will still quote, but the rate structure may shift to volume LTL or spot pricing. Above 20,000 lbs, a truckload quote is almost always worth running alongside any LTL quote because the cost difference frequently favors truckload at that weight. Maximum weight per skid also differs by carrier: nationwide and larger carriers can usually handle a pallet up to about 5,000 lbs, while smaller regional carriers often cap a single pallet at 3,000 to 4,000 lbs. Confirm the per-pallet limit when a single skid is heavy.

Pallet Height

The standard maximum pallet height is around 96 inches, measured from the floor to the top of the freight including the pallet itself. A standard GMA pallet is 5 to 6 inches tall, leaving roughly 90 inches of usable cargo height. Some carriers can go taller, but it depends on the carrier, the terminal, and the equipment available at that terminal, so confirm before you tender a tall load. Shipments exceeding a carrier’s height limit risk refusal at pickup or delays.

Pallet Footprint

There is no single standard pallet footprint anymore, so always confirm your actual dimensions before booking. Freight should not overhang the pallet edge, and larger skids occupy more trailer space, which can trigger volume pricing or overlength charges. Because footprints vary, calculate the real trailer space your freight consumes rather than assuming a standard size, so the quote reflects what you will actually be charged.

Linear Feet and Overlength

LTL carriers price by space consumed as well as weight. A shipment that occupies more than 12 linear feet of trailer length is often assessed under volume LTL pricing rather than standard per-hundredweight rates. Individual pieces of 8 feet or more may trigger an overlength accessorial, and a few carriers flag pieces in the 6 to 8 foot range as excessive. The fee ranges from about $100 to $1,000 per occurrence, depending on the carrier and the degree of excess.

What Happens When You Exceed the Limits

Exceeding a weight or size threshold does not always result in a simple fee. The carrier’s response depends on when and how the excess is discovered, and the outcomes range from a manageable accessorial charge to a full shipment refusal.

When a shipment breaks a limit, the carrier often re-rates it rather than simply refusing it. The most common triggers are:

• Cubic capacity violation: the freight takes up too much trailer cube for its weight.
• Linear feet violation: the load occupies more than the allowed linear feet, commonly 12.
• Minimum density violation: the freight is too light for the space it consumes.

When one of these applies, the shipment is typically re-rated as a volume LTL or truckload quote, which can change your cost significantly from the original LTL rate.

The most avoidable of these outcomes is an overlength or overhang exception discovered at the terminal after pickup. At that point the shipment is already in the carrier’s possession and you have limited leverage. Measuring freight accurately before booking and flagging any non-standard dimensions to your broker or carrier upfront keeps these exceptions from becoming disputes. Proper LTL packaging is equally important for preventing terminal exceptions.

When LTL Stops Making Sense: Size and Weight Break Points

LTL is cost-effective up to a point. As shipment size grows, the per-shipment cost of LTL approaches and then exceeds what a spot truckload quote would cost for the same freight. The break points to watch are weight, pallet count, and linear feet.

At 6,000 lbs and under, LTL is almost always cheaper than truckload. Between 6,000 and 10,000 lbs, compare both. Above 10,000 lbs, a truckload quote is worth running every time. The same logic applies to pallet count: under 6 pallets, default to LTL; 10 or more pallets, get a truckload option alongside. For more detail on where the modes diverge on cost, see our LTL vs FTL comparison guide.

Linear feet is the less intuitive threshold. A shipment of 8 pallets each 4 feet wide placed end to end occupies 32 linear feet of a 53-foot trailer. At that point the load is over 60 percent of a trailer and a partial truckload quote will often be competitive. Most carriers and brokers calculate linear feet automatically during quoting, but it helps to know the math before the numbers come back.

Frequently Asked Questions

What is the maximum weight for LTL shipping?

Most LTL carriers accept shipments up to about 20,000 lbs under standard LTL pricing. Above 10,000 lbs the rate structure often shifts to volume LTL or spot pricing. Above 20,000 lbs, a truckload quote is almost always worth comparing because costs frequently favor truckload at that weight. Maximum weight per single skid varies by carrier, roughly 5,000 lbs for larger carriers and 3,000 to 4,000 lbs for smaller regional carriers.

What is the minimum weight for LTL?

Most LTL carriers accept shipments starting around 100 lbs. The more useful threshold is cost: under about 50 lbs, LTL is often not cost-effective and parcel carriers are typically cheaper and faster. If your shipment is very light and fits in standard boxes, UPS or FedEx Ground is usually the better option.

How tall can an LTL pallet be?

The standard maximum pallet height is around 96 inches including the pallet, which is typically 5 to 6 inches tall, leaving roughly 90 inches of usable cargo height. Some carriers can go taller, but it depends on the carrier, the terminal, and the equipment available there, so confirm first. Shipments over a carrier’s height limit risk refusal at pickup or an accessorial at the terminal.

What is an overlength fee in LTL shipping?

An overlength fee is an accessorial charge applied when any single piece of freight exceeds the carrier’s maximum length threshold, generally 8 feet or more, though a few carriers flag pieces in the 6 to 8 foot range. The fee ranges from about $100 to $1,000 per occurrence depending on the carrier, charged on top of the base linehaul rate and fuel surcharge.

When should I switch from LTL to truckload?

Consider getting a truckload quote when your shipment exceeds 10 pallets, 10,000 lbs, or 12 linear feet of trailer space. At those thresholds, LTL rates often approach or exceed spot truckload costs, especially when accessorial fees are factored in. Running both quotes side by side takes minutes and can reveal meaningful savings.

What is dimensional weight and how does it affect my LTL rate?

Dimensional weight is calculated as length x width x height (in inches) divided by 139. If your freight is bulky but light, the dimensional weight may be higher than the actual scale weight, and you are billed on the higher of the two. Calculating dimensional weight before booking ensures the quoted rate matches what you will be invoiced.

Know Your Numbers Before You Book

The weight and size limits that govern LTL pricing are straightforward once you know them. The shippers who run into problems are almost always the ones who book before measuring, or who assume their freight qualifies for standard LTL rates without confirming dimensions and linear feet.

A freight broker can review your load specs before booking, confirm any carrier-specific exceptions, and return accurate quotes that reflect what you will actually pay on the invoice, not what a quick online tool estimates without full shipment details.