Your search for "qfx fan" revealed the following:

NEW HPE Aruba JL761A CX 6300 Series Fan Tray Switch

SKU: NSN-5857
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Dell S4148FE-ON 48x 10GB SFP+ 2x 40GB QSFP+ 4x 100GB QSFP28 F-B No OS10 Switch

SKU: NSB-9790
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7280CR-48-F 48x 100G QSFP100 8x 40G QSFP+ F-R Airflow Switch

SKU: NSN-1509
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco A902-FAN-E ASR 902 Series Enhanced Router Fan Tray

SKU: NSH-7187
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7280CR2A-30-F 7280R Series 30x 100 Gigabit QSFP100 F-B Air Switch

SKU: NSN-3723
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco A9K-9922-FAN-V2 ASR 9922 System v2 Router Fan Tray

SKU: NSH-7097
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Juniper EX4650-48Y-AFI 48x 25GB SFP28 8x 100GB QSFP28 B-F Air Switch

SKU: NSN-3465
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Juniper JPSU-1600W-AC-AFO 1600W AC F-B PSU for QFX10002, QFX5220, PTX1000

SKU: NSN-4148
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7050CX3-32S-R 32x 100GB QSFP100 2x 10GB SFP+ B-F Air Switch

SKU: NSN-3614
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7280SE-64-F 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Air Switch

SKU: NSN-2462
Condition: New
Shipping: Overnight Options
Warranty: 365 days