Stack of two heater controller cards with 12 total channels.
| Bill Of Materials | Qty | Unit | Total | Notes |
| heater controller stack +6ch | 1 | ea | 175.43 | |
| heater controller stack base | 1 | ea | 253.81 | |
| labor assembly/fabrication (min) | 2 | min | 1.84 | |
| screw 4-40 x 5/8 PH SS | 4 | ea | 0.48 | |
| heater controller stack 12 channel | 1 | ea | 431.56 |