4X4 Overall Dimensions: L18 x W18cm 4X6 Overall Dimensions: L23, W18cm 5X7 Overall Dimensions: L25.5, W20.5 8X10 Overall Dimensions: L33, W28cm Double: Two 4X6 photographs. Overall Dimensions: L23, W36cm Large: 4X6 photograph. Overall Dimenions: L30.5, W30.5cm XLarge: 5X7 or 8X10 photograph. Overall Dimensions: L40.5, W 40.5cm