For non racked Storage Fusion systems, you will need to attach air ducts onto 9155-S01 and 9155-S02 switches. These videos are step by step procedures to install the air duct into the 9155-S01 (High Speed switch).
This video describes the installation for 9155-S01 in Rack Unit 21 (RU 21).
This similar procedure is also used to install the air duct into 9155-S01 (Management switch).