Your search for "JPSU-350" revealed the following:
NEW Juniper JPSU-350-AC-AFI EX4300 Switches 350W AC B-F Air Switch Power Supply
SKU: NSN-2920
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 375.99
• Only 2 remaining
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Juniper JPSU-350-AC-AFI EX4300 Switches 350W AC B-F Airflow Switch Power Supply
SKU: NSH-4925
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 367.99
• 4 in stock
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NEW Juniper JPSU-350-AC-AFO EX4300 Series 350W AC F-B Airflow Power Supply
SKU: NSN-5172
Condition: New
Shipping: Overnight Options
Warranty: 365 days
$ 75.99
• Only 2 remaining
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Juniper JPSU-350-AC-AFO EX4300 Series 350W AC Front-to-Back Airflow Power Supply
SKU: NSH-4924
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
$ 72.99
• Only 2 remaining
Call if you need more