Your search for "qfx fan" revealed the following:
Dell S6010-ON EMC S Series 32x 40GB QSFP+ Front-to-Back Airflow 210-AGMN Switch
SKU: NSH-9218
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 159.99
• Only 2 remaining
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Cisco N3K-C3132Q-XL 32x 40GB QSFP+ Back-to-Front Airflow Switch
SKU: NSH-4696
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 479.99
• 7 in stock
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NEW Cisco ASR-9006-FAN ASR 9000 Series 9006 Router Fan Tray
SKU: NSN-2413
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 1,879.99
• Only 2 remaining
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Dell S4148F-ON-RA 210-ALSR 48x SFP+ 4x QSFP28 2x QSFP+ B-F (No OS10) Switch
SKU: NSB-9757
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 2,644.99
• 5 in stock
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Juniper QFX-QSFP-DACBO-3M 3m 40GB QSFP+ to 4x 10GB SFP+ DA Breakout Cable
SKU: NSB-5041
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 214.99
• Only 2 remaining
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Nvidia Mellanox MSX1710-BS2F2 36x 40GB QSFP+ B-F Airflow (P2C) MLNX-OS Switch
SKU: NSB-1075
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 746.99
• Only 2 remaining
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Juniper QFX5100-48S-DC-AFO 48x 10GB SFP+ 6x 40GB QSFP+ F-B Air (DC) Switch
SKU: NSH-8207
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 793.99
• Only 2 remaining
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Juniper QFX-QSFP-DAC-3M 3m 40GB QSFP+ Direct Attach Copper Cable
SKU: NSB-4313
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 91.99
• Only 2 remaining
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Juniper ACX5448-AC-AFO ACX Series 48x 10GB SFP+ 4x 100GB QSFP28 F-B Air Router
SKU: NSB-5801
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 15,182.99
• Only 2 remaining
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Cisco N3K-C3132Q-V 32x 40GB QSFP+ Back-to-Front Airflow Switch
SKU: NSH-8366
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 159.99
• Only 2 remaining
Call if you need more