M320 Airberth. Price dropped as must be gone by end of February. Works perfectly on my boat which has a length of 9.2m and a beam of 2.60m and a dry weight of 2,700kg and fully loaded well over 3,000kg. The Air Berth has never missed a beat and is super easy to use and gets the boat completely out of the water. Air Berth on the Gold Coast can service and deliver. Not sure of make year.