| Model | DIS33G Insert Only | Small Face Plate | Large Face Plate |
| BTU/Hr. (Millivolt Control) | 19,000 - 28,000 NG / 23,000 - 28,000 LP | ||
| Thermal Efficiency | 99% | 99% | 99% |
| Dimensions (of front) | 33”W x 26 3/4”H x 16 1/2”D | 43 1/4"W x 33"H | 50 1/4"W x 36"H |
| Dimensions (of back) | 22 3/4”W x 23 7/8”H x 16 1/2”D* | ||
| Viewing Area | 950 sq. inches | ||
| Support Literature | |