Your search for "QFX FAN" revealed the following:
Extreme 10946 Back-to-Front Airflow Switch Fan Module
SKU: NSB-4881
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper SRX5800-FAN SRX5800 Series Services Gateway 6x Fan Tray
SKU: NSB-0350
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper EX4300-48MP-FAN EX4300 Series Front-to-Back Airflow Switch Fan Module
SKU: NSH-9693
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
HPE Aruba JL715A CX 8360 Series Back-to-Front Airflow Switch Fan Module
SKU: NSB-8115
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48T-DC-AFO 48x MultiGB RJ45 6x 40GB QSFP+ F-B (DC) Switch
SKU: NSN-4198
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5110-48S-DC-AFI 48x 10GB SFP+ 4x 100GB QSFP28 B-F Air (DC) Switch
SKU: NSN-3622
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper JNP-FAN-1RU MX Series Router Fan Tray for MX204
SKU: NSN-0739
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper FFANTRAY-MX240-HC MX240 Series Enhanced Router Fan Tray
SKU: NSB-4300
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Arista FAN-7002H-F Front-to-Back Air (Red) Fan Module for 7260CX
SKU: NSN-2846
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco ASR-9001-FAN-V2 ASR 9000 Series Router Fan Assembly
SKU: NSN-9702
Condition: New
Shipping: Overnight Options
Warranty: 365 days