Your search for "qfx fan" revealed the following:
Juniper QFX5200-32C-FANAFO QFX5200 Series F-B Airflow Switch Fan Module
SKU: NSB-5053
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX520048Y-FAN-AI QFX5200 Series Back-to-Front Airflow Switch Fan Module
SKU: NSB-5048
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX520048Y-FAN-AO QFX5200 Series Front-to-Back Airflow Fan Module
SKU: NSB-5047
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper JNP10002-FAN1 QFX10002 Series Front-to-Back Airflow Switch Fan
SKU: NSB-5043
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5110-FANAFI EX4650 Series Back to Front Airflow Switch Fan
SKU: NSB-9565
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
Juniper QFX5110-FANAFO F-B Switch Fan Module for QFX5110, QFX5120, EX4650 Series
SKU: NSH-9463
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5110-FANAFO F-B Switch Fan Module for QFX5110, QFX5120, EX4650
SKU: NSN-4716
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-FAN-AFI B-F Airflow Switch Fan Module for QFX5100 and EX4600
SKU: NSN-0282
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5110-FANAFO EX4650 Series Front-to-Back Airflow Switch Fan Module
SKU: NSB-9567
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days