In layman's terms they have a solution between the walls which freezes down when the appliance is operating and then releases the cold to maintain product temperature when the fridge is off. This enables a far superior battery economy. This is a decided advantage for overnight stops in a one battery vehicle and a brilliant advantage for solar power useage. They obviously do not rust in the salt air and spray. The 73 litre has a stainless steel telescopic stay which holds the lid open and the manufacturer has added a 12 volt fan to the motor compartment to assist operation in this much bigger unit.
Price is plus freight charges.
Due to the variations in freight I prefer to quote to each customer. Please email me for a price including freight. Please include your address for freight estimation. Discounts will apply for EFT or direct deposit money transfers. Price is plus freight charges.