NOTE* THIS ITEM IS NOT A RETRO FITTED ITEM. THIS ITEM MUST BE ORDERED AT THE SAME TIME AS THE COUCH. IT CANNOT BE FITTED AFTERWARDS. The plinth accessory bracket as been designed to be attached to the Doherty 2 and 3 section plinths specifically to hold the siderails, knee troughs, phlebotomy arms and lithotomy stirrups. Delivered as a pair.