Your search for "qfx fan" revealed the following:
Juniper EX3400-FAN-AFO EX3400 Series Front-to-Back Airflow Switch Fan Module
SKU: NSH-8747
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 39.99
• Only 2 remaining
Call if you need more
Juniper EX4300-FAN-AFI EX4300 Series Back-to-Front Airflow Switch Fan Module
SKU: NSH-4483
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 29.99
• Only 2 remaining
Call if you need more
NEW Juniper QFX5100-48S-3AFI 48x 10GB SFP+ 6x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-2444
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,041.99
• Only 1 remaining
Call if you need more
Juniper QFX5120-48T-AFO 48x 10G RJ45 6x 100GB QSFP28 F-B Airflow Switch
SKU: NSB-4852
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 14,062.99
• Only 1 remaining
Call if you need more
NEW Arista FAN-7000H-R B-F Fan Module for 7050X3, 7060X, 7160, 7280R Series
SKU: NSN-5321
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 191.99
• 20 in stock
Call if you need more
Juniper QFX5100-96S-DC-AFO 96x 10GB SFP+ 8x 40GB QSFP+ F-B Airflow (DC) Switch
SKU: NSB-0315
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 939.99
• Only 2 remaining
Call if you need more
Arista FAN-7000-F F-B Fan Module for 7020R, 7060CX, 7280E, 7280R Series
SKU: NSB-5983
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 38.99
• 16 in stock
Call if you need more
Juniper QFX5200-32C-AFI 32x 100GB QSFP28 Back-to-Front Airflow Switch
SKU: NSH-8252
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 3,449.99
• Only 2 remaining
Call if you need more
Dell X382X EMC Front-to-Back Airflow Normal S4810 S4810P Switch Fan Module
SKU: NSB-6579
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 184.99
• Only 1 remaining
Call if you need more
Cisco N9K-C9300-FAN3 Nexus 9300 Front-to-Back (Port-Side Intake) Fan Module
SKU: NSH-6019
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 56.99
• Only 2 remaining
Call if you need more