Your search for "Juniper MX240" revealed the following:
NEW Juniper MX2K-MPC6E MX Series 5G Universal Routing Platform Interface Module
SKU: NSN-9325
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper MX-MPC2-3D-EQ MX Series MPC2 w/ per-IFL HQoS Router Line Card
SKU: NSH-4748
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
NEW Juniper MIC6-10G-OTN MX2000 Series 24x 10GB SFP+ Router Module
SKU: NSN-3789
Condition: New
Shipping: Overnight Options
Warranty: 365 days
Juniper MIC-3D-4COC3-1COC12-CE Circuit Emulation Router Module w/ SFP
SKU: NSB-0237
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper RE-MX2000-1800X4-S-A MX2000 Series Routing Engine and Control Board
SKU: NSB-2377
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days
Juniper SRX240-RMK Rack Mount Kit for 19 Inch Rack
SKU: NSH-7627
Condition: Seller refurbished
Shipping: Overnight Options
Warranty: 365 days