Home > Agriculture > 2023 MK Martin MK5000 Gravity Box 2023 MK Martin MK5000 Gravity Box $28,995 Call 204-746-8441 Email Us Overview Condition:New Description In Stock! 605 Bushel Gravity Box, complete with 12 Inch Extensions, Roll Tarp, Horst 365 Wagon, 425/22.5 Used Tires, Viewing Windows, Road Lights, Front Ladder, Unloading Door, Includes Metering Door, Available in Green. Call Tanner, Ron or Mark for more details. 1-866-746-8441.