What is the height of the ventilation duct in feet?

• A. 3.5 ft
• B. 3.0 ft
• C. 4.0 ft
• D. 3.25 ft

Answer: (A)

The height is determined by the design drawings or field measurements for the ventilation layout, so you match the specified dimension exactly. In this case, the plan calls for the duct to sit 3.5 feet above the finished floor, so the bottom edge of the duct should be at that height. This keeps the duct in proper relation to other components, preserves required clearance for insulation and access, and aligns with the overall layout. Heights like 3.0, 4.0, or 3.25 feet don’t match the stated design dimension, so they wouldn’t fit the plan.