Your search for "juniper qsfp-40g" revealed the following:
Juniper EX4300-48T-DC-AFI 48x 1GB RJ-45 4x 40GB QSFP+ B-F Airflow (DC) Switch
SKU: NSH-4918
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-DC-AFI 48x 10GB SFP+ 6x 40GB QSFP+ B-F Air (DC) Switch
SKU: NSN-3947
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX4300-24T EX4300 Series 24x 1GB RJ45 4x 40GB QSFP+ F-B Air Switch
SKU: NSN-2972
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-D-3AFO 48x 10GB SFP+ 6x 40GB QSFP+ F-B Air (DC) Switch
SKU: NSN-3806
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX4300-32F-TAA 32x 1GB SFP 4x 10GB SFP+ 2x 40GB QSFP+ (TAA) Switch
SKU: NSN-3462
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX10000-36Q QFX 10000 Series 36x 40GB QSFP+ Switch Line Card
SKU: NSN-3791
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-AFO 48x 10GB SFP+ 6x 40GB QSFP+ Front-to-Back Air Switch
SKU: NSN-1678
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-24Q-AA-AFI 24x 40GB QSFP+ 1x DW Slot B-F Airflow Switch
SKU: NSN-3775
Condition: New
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper QFX5100-48S-D-3AFI 48x 10GB SFP+ 6x 40GB QSFP+ B-F Air (DC) Switch
SKU: NSN-3805
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-48T-DC-AFO 48x MultiGB RJ45 6x 40GB QSFP+ F-B Air (DC) Switch
SKU: NSH-8211
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days