SIZE, WEIGHT AND VALUE LIMITATIONS
Size: Packages will be accepted for transportation, provided the dimensions of the package are within 30 inches X 47 inches X 82 inches.
Shipments of Skis and/or Ski Poles will not be subject to the size limitations specified herein.
The Carriers participating in these rates, rules and regulations reserve the right to refuse to accept a package if its dimensions, even though within the limits specified herein, exceed the size or capacity of the Baggage and Express Compartments of the available vehicles.
Weight: No single Package will be accepted for transportation that exceeds one hundred (100) pounds in Actual Weight. Provisions for shipments weighing up to, but not exceeding, one hundred fifty (150) pounds apply in selected areas. Shipments over one hundred (100) pounds are limited to the routes of carriers with a (150) after the name. See next page for applicable areas. Xpress Baggage shipments may not exceed 75 pounds per piece.
Value: No single shipment (Prepaid, Collect, or C.O.D.) will be accepted for transportation that exceeds one thousand dollars ($1,000) in actual or released value. Released or declared value is the value agreed upon between the shipper and the carrier as evidenced by the uniform receipt given to the shipper by the carrier at the time of shipment or within a reasonable time thereafter or as agreed upon. With the exception of Xpress Baggage Service shipments, excess value charges will be assessed for any shipment with value greater than one hundred dollars ($100). Xpress Baggage Service shipments will be assessed excess value charges for any shipment with value greater than two hundred, fifty dollars ($250).
Excess Value Charges: Excess Value Charges will be assessed dependent upon the value declared in writing by the shipper or agreed upon in writing as the released value of the property, as follows:
The above was taken from the Greyhound website. Unless your packaged door is shorter than 6'10" and under 100 lbs., it won't fit within the limits. The package would go through a lot of handling too.
I'd go through NAVL.