Adapter Kits and hardware are used for mounting the Double Tier VXI Receiver (P/N 310 104 248) to the Mainframe. As an added service, PLEASE NOTE: VPC will mount the Receiver and Flanges to a customer supplied chassis at no additional cost. Otherwise, an Alignment Jig (P/N 411 101 125) is required to properly mount a VXI Receiver and Flanges to a VXI Chassis. These jigs are available for purchase, or VPC will make loaner units available.