Your search for "qfx fan" revealed the following:
NEW Cisco ASR-9904-FAN ASR 9000 9904 1x Fan Tray/Module Router
SKU: NSN-3598
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell 6MY5N For S4048-ON Front To Back Airflow Switch Fan Module
SKU: NSB-3440
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N2K-C2248-FAN Nexus 2000 Back-to-Front Airflow Switch Fan Module
SKU: NSN-0420
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco UCSC-FAN-C220M4 UCS C220 M4 Series Server Fan Module
SKU: NSB-4318
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MS450-12-HW 12x 40GB QSFP+ 2x 100GB QSFP28 Unclaimed Switch
SKU: NSN-3730
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N20-FAN5 UCS 5100 Blade Series V02 Server Fan Module for UCS 5108
SKU: NSN-8687
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N5K-C5624Q 12x 40GB QSFP+ 1x GEM Slot Front-to-Back Air Switch Chassis
SKU: NSN-0327
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N7K-C7018-FAN Nexus 7000 Series 18-Slot Fan Tray
SKU: NSN-6795
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper JNP-3000W-AC-AFO PTX Series 3000W AC F-B Airflow Switch Power Supply
SKU: NSB-2220
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco ASR-9912-FAN ASR 9900 Series 9912 Router Fan Module
SKU: NSH-7098
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days