Your search for "NXA-FAN" revealed the following:
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
NEW Cisco Meraki MA-FAN-18K F-B Fan Module for MX105, MX250, MX450 Firewalls
SKU: NSN-5504
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Cisco N9K-C9316D-GX Nexus 9300-GX 16x 400GB QSFP-DD B-F Airflow Switch
SKU: NSB-2125
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
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
Extreme XN-FAN-001-R SLX 9150 Series Back-to-Front Airflow Switch Fan
SKU: NSB-0094
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper SRX3400-FAN-A SRX3400 Series 4x Fans / FanTray
SKU: NSH-6978
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco C4KX-FAN-F Catalyst 4500-X Series Back-to-Front Cooling Switch Fan
SKU: NSN-6200
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Cisco Meraki MA-FAN-18K F-B Fan Module for MS350 MS355 MS425 and MS450
SKU: NSN-6118
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
Juniper QFX5110-FANAFI B-F Air Switch Fan for QFX5110, QFX5120 and EX4650
SKU: NSB-0370
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days