Your search for "qfx5200-32c-fan" revealed the following:
Juniper JPSU-850W-DC-AFI QFX Series 850W DC Back to Front Airflow Power Supply
SKU: NSB-5046
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper JPSU-850W-DC-AFO QFX Series 850W DC Front to Back Airflow Power Supply
SKU: NSB-5045
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days