Plastic 20 Bottle Milk / Beer Crates holds 20 standard beer bottles Crate Dimensions 453mm (length) x 355mm (width) x 243mm (height) compartment size approx 85mm x 85mm Internal depth is 230mm These are standard milk crates produced primarily for the dairy industry and so are of an industry standard size. They are nevertheless particularly useful for homebrewers because two full crates will exactly take the 40 bottles needed for a standard brew. Please take care to ensure that your bottles fit the crates (max height just under 230mm).