A Whirlpool refrigerator with 33-inch width has a freezer capacity of 6.45 cubic feet, while a model with a 30-inch width has a freezer capacity of 5.73 cubic feet. Whirlpool does not provide exact dimensions for the freezers in its product specifications.
A 30-inch refrigerator has an actual width of 29.62 inches, a height of 67 inches and a depth of 33.37 inches. The 33-inch model has an actual width of 32.62 inches, a height of 70 inches and the same depth as the 30-inch version. The total capacity of the 30-inch unit is 18.67 cubic feet, and the total capacity of the 33-inch unit is 22.07 inches.
The dimension from the floor to the top of the refrigerator is critical because the refrigerator should have at least two inches of clearance below overhead cabinets.
Another important dimension is the depth of the refrigerator when the door is open 90 degrees. This allows adequate movement around the refrigerator when working in the kitchen. 30-inch refrigerators are 59 inches deep, while 33-inch refrigerators are 62 inches deep.