Your search for "QFX FAN" revealed the following:
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
Juniper QFX5100-48T-DC-AFO 48x MultiGB RJ45 6x 40GB QSFP+ F-B Air (DC) Switch
SKU: NSH-8211
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba JL715A CX 8360 Series Back-to-Front Airflow Switch Fan Module
SKU: NSN-5835
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell 743WY EMC S-Series Back-to-Front Airflow Switch Fan Module
SKU: NSB-6576
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX4400-FAN-AFI EX4400 Series Switch Fan Module
SKU: NSN-1315
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco C6807-XL-FAN Catalyst 6807 Series Switch 9x Fan Tray
SKU: NSN-3096
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
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
NEW Cisco N2K-C2232-FAN-B Nexus 2000 Front-to-Back Airflow Switch Fan Module
SKU: NSN-0396
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper JNP-FAN-1RU MX Series Router Fan Tray for MX204
SKU: NSH-7292
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days