Although it depends on your lifestyle, for a good rule of thumb: the LG Combi fridge freezer (capacity: 340-384L) is normally sufficient for a small household of 1-2 people; Slim Multi-Door models (506-508L) suit a family of 3-4; for a larger family, we recommend the capacious LG Multi-Door or American Style models (capacity 625-705L). Multi-Door models provide extra-wide space for storage of items such as trays or platters. At LG we want every customer to get the Fridge Freezer that suits them best, so we offer a selection of sizes within each range.