Greyhound Package Express - maximum weight per package 100 pounds. maximum dimensions are 30" L x 47" W x 82" H. Shipments more than 48" in length could take 15 business days due to space constraints. If manufacturing packaging does not exist, accept at the shippers risk or at no declared value. Have to be boxed or crated? No, but the item must be prepared with appropriate packaging materials in order to protect the item being shipped as well as other items traveling in the cargo space.