Unloading Door

Each Gravity Box comes with an easy to use unloading door equipped with a metering door, providing a smoother, more consistent flow of material. It also allows you to fine tune the amount of material leaving the Gravity Box ensuring that you're in control of the flow every time.

Front Ladder

The front ladder has a slightly angled incline for easier climbing, allowing you to look inside the Gravity Box with less effort and more stability.

Optional Grain Shield Tarp Kit

The Grain Shield Tarp Kit is an option for all of the Gravity Box sizes. This ratchet-free locking system not only protects the contents from blowing away and from inclement weather, but also locks quickly and easily so you can head out sooner.

Road Lights
Every Gravity Box comes equipped with road lights for safer road travel.

Sight Windows

Conveniently located beside the unloading door, these viewing windows allow you to see the current level of material inside the Gravity Box.

Optional Divider Kit

The optional divider splits your Gravity Box, allowing for two separate commodities to be in the box at the same time. Each side also has it's own door for individual unloading and metering.

Currently available only on 5000 and 6500 models.

Optional Hydraulic Door Opener

The Hydraulic Door allows you to conveniently control the metering of the material using a remote from your tractor.

Currently available only on 5000 and 6500 models.

Optional Extension Kit

Available on all models, the optional extension kits increase the capacity of your MK Martin Gravity Box decreasing the amount of trips you need to make.

Optional Rear Ladder

The optional rear ladder gives another access point for operators to look into the Gravity Box.