The standard measurement adopted in alukingmy.com for kitchen base cabinets are 600mm in depth and 860mm in height (include countertop).
The actual dimension (depth and height) for each base cabinet differs based on their purpose. The allowances at the height and depth are left for the countertop placement.
In the product listing, single door means only one door and the width is available from 300mm to 600mm. Anything wider will need two doors, i.e. Double doors.
Important Note: End panels are affixed to the sides of the kitchen cabinets (not each cabinet). The end panel for the side which is exposed shall use the ones with glass. Select "Aluminium Frame Only" for the side which is not exposed (fixed to the wall).