Your search for "qfx5100-fan" revealed the following:
NEW Juniper QFX5100-24Q-DC-AFI 24x 40GB QSFP+ 2x Mod Slots B-F Air (DC) Switch
SKU: NSN-3902
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48T-AFI 48x 10GB Copper 6x 40GB QSFP+ B-F Air Switch
SKU: NSN-1866
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-24Q-DC-AFI 24x 40GB QSFP+ 2x Mod Slots B-F Airflow (DC) Switch
SKU: NSH-8214
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-24Q-AA-AFO 24x 40GB QSFP+ 1x DW Slot F-B Airflow Switch
SKU: NSN-3776
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-24Q-D-3AFI 24x 40GB QSFP+ 2x Mod Slots B-F Air (DC) Switch
SKU: NSH-8234
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48T-DC-AFI 48x MultiGB RJ45 6x 40GB QSFP+ B-F (DC) Switch
SKU: NSN-4199
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-24Q-D-3AFI 24x 40GB QSFP+ 2x Mod Slots B-F Air (DC) Switch
SKU: NSN-3777
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-24Q-AA-AFO 24x 40GB QSFP+ 1x DW Slot Front-to-Back Air Switch
SKU: NSH-8233
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days