Your search for "qfx fan" revealed the following:

NEW Ruckus Brocade ICX-FAN10-E ICX 7450 Series Front-to-Back Airflow Switch Fan

SKU: NSN-0004
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NXA-FAN-65CFM-PI Front-to-Back Airflow (Port Side Intake) Switch Fan

SKU: NSN-4647
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Ruckus Brocade ICX7750-FAN-E Fan Kit of 4 - F-B Airflow (Port Side Intake)

SKU: NSN-4952
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco NXA-FAN-65CFM-PI Front-to-Back Airflow (Port Side Intake) Switch Fan

SKU: NSH-8370
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco NXA-FAN-35CFM-PI Nexus 9300 F-B Airflow (Port Side Intake) Switch Fan

SKU: NSN-3457
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Extreme XN-FAN-001-F VSP 7400 Series Front-to-Back Airflow Switch Fan

SKU: NSN-4653
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Extreme Brocade BR-MLXE-8-FAN MLXe Series Exhaust Fan Assembly Kit

SKU: NSB-6732
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

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

Extreme XN-FAN-001-F VSP 7400 Series Front-to-Back Airflow Switch Fan

SKU: NSH-8531
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Juniper JPSU-850W-AC-AFI QFX5100 Series 850W AC B-F Airflow Power Supply

SKU: NSN-0275
Condition: New
Shipping: Overnight Options
Warranty: 365 days