Stack of seven switchbank controller card with 56 total channels.
| Bill Of Materials | Qty | Unit | Notes |
| CCA switchbank controller | 1 | ea | |
| labor assembly/fabrication (min) | 7 | min | |
| screw 4-40 x 2-3/16 PH SS | 4 | ea | |
| switchbank stack +8ch | 6 | ea | |
| switchbank stack base | 1 | ea | |
| switchbank stack 56 channel | 1 | ea |
| Used on | Qty |