Your search for "Juniper QSFP-40G" revealed the following:
Juniper QFX5100-24Q-AA-AFI 24x 40GB QSFP+ 1x DW Slot Back-to-Front Air Switch
SKU: NSH-8216
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper EX4300-48P-TAA 48x 1GB PoE+ RJ45 4x 40GB QSFP+ F-B Airflow AC Switch
SKU: NSH-8951
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper QFX5100-24Q-D-3AFO 24x 40GB QSFP+ 2x Mod Slots F-B Air (DC) Switch
SKU: NSH-8235
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper EX4300-48P-AFI 48x 1GB PoE+ RJ-45 4x 40GB QSFP+ B-F Airflow Switch
SKU: NSN-0621
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper JNP-QSFP-DACBO-7MA 7m 40GB QSFP+ to 4x 10GB SFP+ DA Breakout Cable
SKU: NSB-5063
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper MPC7E-MRATE MX Series 12x 40GB QSFP+ Router Line Card
SKU: NSN-9731
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 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 EX4300-48P-TAA 48x 1GB PoE+ RJ-45 4x 40GB QSFP+ F-B Air (TAA) Switch
SKU: NSN-3704
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper EX4300-48T-AFI-TAA 48x 1GB RJ45 4x 40GB QSFP+ B-F Air (TAA) Switch
SKU: NSH-8952
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days