What length is commonly specified for upper cabinets?

The commonly specified length for upper cabinets in kitchen design is 30 inches. This height is standard because it allows for sufficient storage space while remaining functional and accessible for most users. It positions the cabinets at a reasonable height above the countertops, making it easy to reach items stored within while also ensuring that the overall kitchen design remains visually appealing.

Choosing a height of 30 inches helps to maintain a coherent aesthetic between the upper and lower cabinets, typically ensuring that the upper cabinets are appropriately spaced from the countertops. The practicality of this height also caters to typical ceiling heights found in residential properties, creating a balanced look that does not overwhelm the space.

The other options provided do not typically serve as standard heights for upper cabinets, as they either fall too low or are less commonly used to achieve the desired functionality and proportion within kitchen design.