The Airsled Sub Zero Adapter Kit was designed to help you move heavy Sub Zero Appliances with the Airsled Appliance Air Dolly Model 2015. Sub Zero appliances are built with the back of the appliance being higher than the front. Sub Zero raises their appliance higher in order to fit the compressor, hoses, and electrical wiring under the unit. Since this is done you can't just "jack-up" the refrigerators from the bottom because you could damage the appliance internals and the load barring front and rear beams are at different heights.
The Sub Zero Adapter Kit provides a strong frame to lift against and are designed to avoid damage to the dangling parts located on the bottom of the Sub Zero refrigerators.