ShippingCowBest 3PL for oversized packages
Oversized-package brands need a 3PL that measures each carton against carrier lines and chooses the right mode. UPS and FedEx set a 90 lb minimum billable weight when a package crosses their oversize triggers. ShippingCow's service band is one carton from 50 to 149 lb.
Oversize at a glance (2026)
| Rule | UPS Large Package | FedEx Oversize |
|---|---|---|
| Triggered by | Over 96 in long, 130 in length plus girth, 17,280 cubic in, or 110 lb actual weight | Over 96 in long or 130 in length plus girth |
| Minimum billable weight | 90 lb | 90 lb |
| 2026 list surcharge | Priced by zone in the UPS rate guide | A published zone-based surcharge (see the UPS rate guide) |
| Parcel limit | 150 lb, 108 in long, 165 in length plus girth | 150 lb, 108 in long, 165 in length plus girth |
The 90 lb minimum is the expensive part
An oversize package is billed as if it weighed at least 90 lb. For a 30 lb product in a long carton, that triples the billable weight before the surcharge is added, and the base rate still climbs with the zone.
That makes the carton the first lever. A 97 in box cut to 95 in drops out of oversize entirely, provided its length plus girth also stays at 130 in or under.
What to ask a 3PL
| Ask | Why |
|---|---|
| Which of my SKUs sit within a few inches of an oversize line? | Those are the clearest wins: a small carton change removes the surcharge |
| Do you split oversize SKUs across warehouses? | Oversize charges rise with the zone, so a short zone matters more, not less |
| When would you move a SKU to freight? | Past 150 lb, 108 in or 165 in there is no parcel option. Below that, freight can still win on multi-unit orders |
Where ShippingCow fits
We ship parcels of 50 to 149 lb, long and large ones included, from three US warehouses so each order travels the shortest zone. Where a product is oversize by a few inches, the audit says so.
Sources
| Source | What we took from it |
|---|---|
| UPS 2026 Tariff and Terms of Service | UPS Additional Handling and Large Package rules, including the 2026 cubic and 110 lb triggers |
| FedEx 2026 surcharge and fee changes | 2026 Additional Handling and Oversize list prices by zone, effective January 5, 2026 |
| FedEx: What is an Oversize Charge? | FedEx oversize lines, the 90 lb minimum, and where freight starts |
Rules and list prices as published for 2026, checked on Sep 25, 2026. Carrier contracts change the prices, not the thresholds.
Questions
What is considered an oversized package? +
UPS and FedEx treat a package above 96 in long or 130 in in length plus girth as oversize territory. The formula is length plus twice the width plus twice the height.
How do I avoid oversize charges? +
Keep the carton below 96 in and 130 in in length plus girth where the product allows it. If it crosses a line, shipping from a closer warehouse still changes the zone.
Can a 3PL ship packages over 150 lb? +
ShippingCow handles one-carton products from 50 to 149 lb. A carton past the parcel carrier lines needs a freight conversation before it moves.
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