Which of the following is true about the installation of grease ducts?

The installation of grease ducts requires adequate clearance from flammable objects to ensure safety and compliance with fire codes. Grease ducts are used to convey grease-laden vapors from commercial cooking equipment, and the presence of grease can increase the risk of fire if not properly managed. By maintaining the required clearance, it minimizes the risk of heat buildup, which can ignite nearby materials and create dangerous fire hazards.

In many building codes and safety regulations, there are specific requirements regarding the space and clearance needed around grease ducts to protect surrounding structures and enhance safety. This is essential not only for preventing the spread of fire but also for ensuring that the ducts can operate effectively without obstruction.

While insulation may be a requirement for some duct installations in certain contexts, it is not universally required for all grease ducts. Additionally, grease ducts must be cleaned regularly to prevent grease buildup, which is a fire risk itself. Therefore, ensuring adequate clearance addresses critical aspects of both fire safety and proper duct function.