Your search for "qfx fan" revealed the following:
NEW Dell S4148F-ON-RA 210-ALSR 48x SFP+ 4x QSFP28 2x QSFP+ B-F (No OS10) Switch
SKU: NSN-9931
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX10000-30C-M QFX 10000 30x 100GB QSFP28 MACsec Switch Line Card
SKU: NSN-3770
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme 17111 ExtremeSwitching X670-G2 Front to Back Air Switch Fan Module
SKU: NSN-5560
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Ruckus Brocade ICX7650-48P-E2 48x 1GB PoE+ RJ45 4x 40GB QSFP+ F-B Air Switch
SKU: NSB-6286
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW HPE Aruba J9831A 5400R zl2 Series Switch Fan Tray
SKU: NSN-0097
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Dell S4128T-ON-RA 28x 10GB Copper 2x 100GB QSFP28 B-F Air 210-ALTI OS10 Switch
SKU: NSB-6541
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco N2K-C2348TQ 48x 10GB Copper 6x 40GB QSFP+ F-B Airflow Fabric Extender
SKU: NSB-7161
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco C9200-FAN Catalyst 9200 Series Switch Fan Module
SKU: NSB-3469
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX10000-60S-6Q 60x 10G SFP+ 6x 40GB QSFP+ 2x 100GB Switch Line Card
SKU: NSN-3733
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper JPSU-650W-DC-AFI QFX5120 Series 650W DC B-F Air Power Supply
SKU: NSB-0455
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days