| Number of Tubes | Width w/Manifold & Blower | Overall Width | Front Height | Rear Height | Depth | BTU per Hour (max) |
| 5 Tubes (standard size) | 27.625" | 18.125" | 20" | 13.5" | 17.375" | 60,000 |
| 6 Tubes (custom size) | 31.5" | 22" | 20" | 13.5" | 17.375" | 72,000 |
| 7 Tubes (custom size) | 35.375" | 25.875" | 20" | 13.5" | 17.375"" | 84,000 |
| 8 Tubes (custom size) | 39.25" | 29.75" | 20" | 13.5" | 17.375" | 96,000 |
| 9 Tubes (custom size) | 43.125" | 33.625" | 20" | 13.5" | 17.375" | 108,000 |
| 10 Tubes (custom size) | 47" | 37.5" | 20" | 13.5" | 17.375" | 120,000 |