As they say in construction, measure twice, cut once. With a refrigerator purchase, you might want to measure three times, making sure to account for measurements beyond width, depth and height, such as the depth of your nearby cabinets, evenness of the floor level, and whether you have enough room for your refrigerator door to swing open. Also factor in a little extra space at the back of the refrigerator for ventilation purposes, where the coil heats for the cooling function to happen.