Your search for "qfx fan" revealed the following:
Extreme EN-SLX-9030-48T-4C 48x 10GB Copper 4x 100GB QSFP28 No Fans No PSU Switch
SKU: NSH-8542
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 764.99
• Only 2 remaining
Call if you need more
Arista DCS-7280CR2K-30-F 30x 100GB QSFP28 Front-to-Back Airflow Switch
SKU: NSH-8381
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 13,494.99
• Only 1 remaining
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Arista DCS-7508R-FM 7500R Series Integrated Fan Switch Fabric Module
SKU: NSB-6333
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 139.99
• 27 in stock
Call if you need more
NEW HPE Aruba JL709A CX 8360 Series 8360-12C Back-to-Front Airflow Switch Bundle
SKU: NSN-9690
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 4,542.99
• Only 1 remaining
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Arista DCS-7280SR-48C6-M-R 48x 10GB SFP+ 6x 100GB QSFP28 B-F Airflow Switch
SKU: NSH-8125
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 4,499.99
• Only 2 remaining
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NEW Arista PWR-747AC-F 7280R Series 750W AC F-B Airflow Switch Power Supply
SKU: NSN-9171
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 374.99
• 49 in stock
Call if you need more
NEW Extreme 7520-48XT-6C-AC-F 48x 10GB RJ45 6x 100GB QSFP28 F-B Air Switch
SKU: NSN-0874
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 21,844.99
• Only 1 remaining
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NEW Juniper QFX5110-FANAFI QFX5110 Series Back to Front Airflow Switch Fan
SKU: NSN-7463
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-96S-FANAFI QFX5100 Series B-F Airflow Switch Fan Module
SKU: NSH-9456
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5110-FANAFI QFX5110 Series Back to Front Airflow Switch Fan
SKU: NSH-9320
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days