Your search for "nxa-fan" revealed the following:
Juniper QFX5110-FANAFI EX4650 Series Back to Front Airflow Switch Fan
SKU: NSB-9565
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MA-FAN-16K F-B Air Fan Module for MS350 MS410 Switches
SKU: NSN-8227
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper FFANTRAY-MX480 MX480 6x Fan HC Fan Tray
SKU: NSH-7433
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5110-FANAFI QFX5110 Series Back to Front Airflow Switch Fan
SKU: NSN-7463
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Ruckus Brocade ICX7750-FAN-E Front-to-Back Airflow (Port Side Intake) Switch Fan
SKU: NSH-7527
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-FAN-AFO F-B Switch Fan Module for QFX5100 and EX4300 Series
SKU: NSN-5908
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco NXA-PAC-350W-PE Nexus 9000 Series 350W AC B-F Airflow Power Supply
SKU: NSB-8474
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
Cisco NXA-PHV-1100W-PE 1100W AC Platinum HV-AC-DC Back-to-Front Airflow PSU
SKU: NSB-2089
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Extreme XN-FAN-001-F VSP 7400 Series Front-to-Back Airflow Switch Fan
SKU: NSH-8531
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days