Your search for "n5k-c5696" revealed the following:
Cisco N5K-C5696-FAN-B Front-to-Back Airflow (Port Side Intake) Fan Module
SKU: NSB-3226
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco N5K-C5696-FAN Back-to-Front Airflow (Port Side Exhaust) Fan Module
SKU: NSB-7096
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N5K-C5696-FAN Back-to-Front Airflow (Port Side Exhaust) Fan Module
SKU: NSN-0297
Condition: New
Shipping: Overnight Options
Warranty: 365 days