As I Brit I would have to ask why you'd want a bigger than 24" fridge? What sort of things do you keep in it?
Some of this depends on the size of your family and how often we shop. At the beginning of the week, our 30" fridge is packed top to bottom:
Cheese, sliced deli-meat, large containers of food cooked over the weekend (beans & rice, stew).
2 gallons of milk, a gallon of filtered water
The doors mostly have condiments (mayo, mustard, ketchup, hot sauce, jam, natural peanut butter)
Then there are the fruits and veggies: 2 heads of lettuce, a bag of mixed greens, a large head of kale, 2 lbs each of apples and oranges, carrots, onions, peppers.
2 dozen eggs, a 3 lb can of coffee. Two 32-oz tubs of yogurt.
Tortillas
By the end of the week, the thing is totally empty. I avoid mid-week shopping (lack of time), so what you see in the fridge on Sunday night is generally everything that we will be eating (family of 4 with 2 growing boys) in the next 7 days.