A Closed End is recommended for any end of an Inground Tumbl Trak where there is no pit. Closed End includes the steel frame piece, Closed End Pad, Extra Springs and D-rings on one end of your bed. NOTE: This must be added at the same time as purchasing the Inground Tumbl Trak so your bed is made with extra D-rings.
A Closed End is recommended for either of the ends of the Tumbl Traks if they are not dismounting into a pit. When ordered you would receive a Closed End Steel frame piece, Closed End Pad, Extra Springs and D-rings on one end of your bed.
You can purchase the closed end later, however you will also have to purchase a new bed as a regular bed does not have d-rings for the closed end to attach to.