A Caesarstone benchtop should be installed on kitchen cabinets with sturdy legs or plinth support, which when they are all fixed together must be all of the same level (not twisted), flat and firmly installed to ensure there is no movement once the Caesarstone benchtop is installed.
It is very important that all cabinets are constructed to fully support the weight of the Caesarstone benchtop, and for this reason it is essential that the cabinets have full perimeter rail support which must not bend or sag under the weight of the Caesarstone benchtop regardless of cabinet width.
When fitting cooktops or sinks which will sit within cut-outs in a Caesarstone benchtop, the strength and stiffness integrity of the perimeter rails must not be compromised.