Vent Hood Duct Length
For maximum performance, keep the duct straight and short. Consult Installation Instructions for your specific model: Download a copy of the Installation Instructions.
For most models, we no longer provide recommended allowable ducting or duct lengths as the performance diminishes along a curve as the equivalent duct length increases. For each installation and cooking situation, it is impossible to determine what an "acceptable" level of diminishment is. Therefore, we provide the general guidance of using the shortest and straightest route possible.