Your search for "qfx fan" revealed the following:

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 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-7050SX3-48YC12-F 48x 25GB SFP28 12x 100GB QSFP100 F-B Air Switch

SKU: NSN-3615
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

NEW Arista DCS-7280SRA-48C6-R 48x 10G SFP+ 6x 100G QSFP B-F Air Switch

SKU: NSN-4308
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Juniper ACX5048-DC-L2-L3 ACX 5000 48x 10GB SFP+ 6x 40GB QSFP+ (DC) Router

SKU: NSB-4752
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7050SX-72Q-F 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Air Switch

SKU: NSN-2402
Condition: New
Shipping: Overnight Options
Warranty: 365 days

NEW Arista DCS-7050S-64-F 48x 10GB SFP+ 4x 40GB QSFP+ Front-to-Back Air Switch

SKU: NSN-2876
Condition: New
Shipping: Overnight Options
Warranty: 365 days

Cisco N7K-C7004 Nexus 7000 Series 4-Slot Switch Chassis w/ N7K-C7004-FAN

SKU: NSH-2894
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days