Your search for "QFX FAN" revealed the following:
Cisco NXA-FAN-65CFM-PI Front-to-Back Airflow (Port Side Intake) Switch Fan
SKU: NSH-8370
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5110-48S-AFI 48x 10GB SFP+ 4x 100GB QSFP28 B-F Airflow Switch
SKU: NSN-3749
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5110-32Q-DC-AFI 32x 40GB QSFP+ Back-to-Front Airflow (DC) Switch
SKU: NSH-8246
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-AFO 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-1678
Condition: New
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
NEW Juniper JPSU-850W-DC-AFI QFX5100 Series 850W DC B-F Airflow Power Supply
SKU: NSN-0278
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Nvidia Mellanox MTEF-FANF-A B-F Airflow (P2C) Switch Fan Module
SKU: NSB-6785
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Cisco FAN-T3-F Catalyst 3850 B-F Airflow Switch Fan Module for the 3850-48XS
SKU: NSH-5696
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5200-48Y-AFI 48x 25GB SFP28 6x 100GB QSFP28 B-F Airflow Switch
SKU: NSN-3632
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5120-48Y-AFI 48x 25GB SFP28 8x 100GB QSFP28 B-F Airflow Switch
SKU: NSN-3626
Condition: New
Shipping: Overnight Options
Warranty: 365 days