Your search for "qfx fan" revealed the following:
Arista DCS-7308X-FM-F (Integrated Fan) Front-to-Back Airflow Fabric-X Module
SKU: NSH-9655
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-D-3AFO 48x 10GB SFP+ 6x 40GB QSFP+ F-B Air (DC) Switch
SKU: NSN-3806
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper JPSU-1100W-AC-AFO QFX Series 1100W AC Front to Back Air Power Supply
SKU: NSB-5044
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX520048Y-APSU-AO 650W AC Back-to-Front Airflow Switch Power Supply
SKU: NSB-5052
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Extreme 17115 SLX 9030 X590 Series Front-to-Back Airflow Switch Fan
SKU: NSH-8598
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5200-32C-DC-AFI 32x 100GB QSFP28 Back-to-Front Air (DC) Switch
SKU: NSN-3630
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N77-C7706-FAN Nexus 7000 Series Power Supply Fan
SKU: NSH-7778
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE Aruba JL630A CX 8325 Series Front-to-Back Airflow Switch Fan
SKU: NSB-5533
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX3008-CHASA-BASE QFX Series 8x Slot AC Fabric Director (Base System)
SKU: NSB-0306
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX3008-SF16Q QFX Series 16x 40GB QSFP+ Switch Module
SKU: NSN-8676
Condition: New
Shipping: Overnight Options
Warranty: 365 days