Custom railings refer to specially designed and fabricated guardrails and handrails used in mechanical services, particularly in heating, ventilation, and air conditioning (HVAC) systems, to provide safety and support. These railings can be installed on platforms, stairways, and other elevated structures to support workers and equipment during maintenance and repair. Custom railings can be made from various materials such as steel, aluminum, or stainless steel, and can be designed to meet specific building codes and requirements. Properly designed and installed custom railings play a critical role in ensuring the safety of workers and equipment in HVAC systems, and can also enhance the overall appearance of a building. Custom railings are an important aspect of mechanical services and should be carefully considered in the design and installation of HVAC systems.