Standard Temperature/Process Controller DIN Sizes
Since temperature controllers are generally mounted inside an instrument panel, the panel must be cut to accommodate the temperature controller. In order to provide interchangeability between temperature controllers, most temperature controllers are designed to standard DIN sizes. The most common DIN sizes are shown bellow:
(from left to right)
These are panel cut-outs for Fuji Temperature Controllers. Please do not use this cut-outs for controllers of another brand. However we can say that cut-outs for other manufacturer's controller are very likely to be close to these dimensions.