Your search for "ffantray-mx240" revealed the following:

Juniper FFANTRAY-MX240-HC-S MX240 Series High Capacity Switch Fan Tray

SKU: NSH-9640
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days

Juniper FFANTRAY-MX240-HC MX240 Series Enhanced Router Fan Tray

SKU: NSB-4300
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days