Here at DigiKey, we sometimes receive questions about environmental, temperature, and similar considerations for devices like Hammond’s RM1U1922SBK rack enclosures. What are the storage and operating temperature ratings for this part? What are its humidity ratings? What does the manufacturer recommend?
The short answer is that there are no such ratings or recommendations. Many devices intended for “Office” or data center use, such as most rack components, are not intended to be exposed to the sorts of conditions common in industrial processes or locations. These products are not meant to withstand temperatures outside the ranges experienced inside a building with functioning HVAC, nor humidities beyond typical office ranges. Manufacturer recommendations for use in these sorts of environments is “don’t.” No specifications are available from suppliers of these components for this reason.