The following some general best practices for shippers with regard to dealing with oversized items being shipped by common carriers.
Choose pallets large enough to prevent overhang of shipment pieces. Many times, shippers will place oversized items (even if only by a few inches) on standard sized pallets. This means that sections of the freight will hang over the sizes of the pallets. Not only can this cause problems with billing, if the pallets can't fit next to other freight int the truck, but it can also result in damage to the item being shipped.
When a shipper fills out the required shipping information to receive an instant freight trucking quote, they might often receive prices from many different leading carriers across the US.