Your search for "qfx fan" revealed the following:

NEW Juniper SRX5600-FAN SRX Series Fan Tray for SRX5600

SKU: NSN-3962
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco FAN-T1 Switch Fan Module for Catalyst 3850 and 3650 Series

SKU: NSN-0382
Condition: New
Shipping: Overnight Options
Warranty: 365 days

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

NEW Cisco N56128-FAN-B Front-to-Back Air (Port Side Intake) Switch Fan Module

SKU: NSN-0290
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco N2K-C2232-FAN-B Nexus 2000 Front-to-Back Airflow Switch Fan Module

SKU: NSB-7153
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Cisco N7K-C7018-FAN Nexus 7000 Series 18-Slot Fan Tray

SKU: NSH-2908
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco UCSC-FAN-C240M4 UCS C240 M4 Front to Back Airflow Server Fan

SKU: NSN-9762
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco DS-C96S-FAN-I MDS 9300 Series Port Side Intake Switch Fan

SKU: NSB-6897
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Cisco Meraki MA-FAN-18K F-B Fan Module for MS350 MS355 MS425 and MS450

SKU: NSN-6118
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW HPE Aruba JL714A CX 8360 Series Front-to-Back Airflow Switch Fan Module

SKU: NSN-4812
Condition: New
Shipping: Overnight Options
Warranty: 365 days