According to grease duct standards, reservoirs must extend across what area?

Reservoirs in grease duct systems are designed to capture grease that accumulates during cooking processes. According to established standards, these reservoirs must extend across the full width of the duct to ensure that any grease-laden vapors and particles that come into contact with the duct walls are effectively retained. This full-width coverage is critical for maintaining safety and efficiency, as it minimizes the risk of grease ignition and facilitates proper collection and maintenance.

In contrast, limiting the reservoir to only a portion of the duct, such as two-thirds, half, or even just the bottom, would not provide adequate coverage. This could lead to grease bypassing the reservoir and subsequently increasing the risk of fire hazards or system failure, as it would not collect all the grease generated. The design requirement for full-width reservoirs serves to enhance the overall safety and performance of grease duct systems in commercial kitchens and similar environments.