Your search for "NXA-FAN" revealed the following:
NEW Cisco N9K-C9504 Nexus 9500 Series 4x Line Card Slot Switch Chassis
SKU: NSN-2217
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Extreme XN-FAN-001-R SLX 9150 Series Back-to-Front Airflow Switch Fan
SKU: NSN-0164
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco N56128-FAN-F Back-to-Front Airflow (Fan Side Intake) Switch Fan
SKU: NSN-2453
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 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
NEW Juniper QFX5110-FANAFI B-F Air Switch Fan for QFX5110, QFX5120 and EX4650
SKU: NSN-0324
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco NCS-1RU-FAN-FW NCS Series Front-to-Back Airflow Router Fan
SKU: NSB-8167
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco C4KX-FAN-R Catalyst 4500-X Series Front-to-Back Airflow Switch Fan
SKU: NSN-9095
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco FAN-T3-F Catalyst 3850 B-F Airflow Switch Fan Module for the 3850-48XS
SKU: NSN-6869
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