Gastronorm sizes were set up by the European Standards Committee as a way of standardising container sizes in the Catering Industry.
Gastronorm container sizes are given as a fraction, with a full size gastronorm container having a code of ‘GN 1/1’. The sizing can be shown both with and without the ‘GN’.
The gastronorm sizing system only covers length and width of containers, the depth is usually shown in metric measurement e.g. millimetres. This means each gastronorm container size can have different depths, and therefore varying capacities.
Below is a list of gastronorm sizes along with their corresponding metric size:
• GN 1/9 : 108 x 176 mm
• GN 1/6 : 176 x 162 mm
• GN 1/4 : 265 x 163 mm (quarter size)
• GN 1/3 : 325 x 176 mm
• GN 1/2 : 325 x 265 mm (half size)
• GN 2/3 : 354 x 325 mm
• GN 1/1 : 530 x 325 mm (full size)
• GN 2/1 : 650 x 530 mm (double size)
Gastronorm containers are often interchangable due to the fractional sizing system. For example if a serving counter has a GN 1/1 capacity it can be possible to interchange for different combinations of containers, for example two GN 1/2 or even a GN 2/3 and GN 1/3.