| Catalog No. | KW | Watt Density | Volts/Phase | Width | Features |
| MDH-55-1512 | 1.5 | 8 | 120/1 | 3" | Infinite Switch and Pilot Light |
| MDH-55-1712 | 1.75 | 9.3 | 120/1 | 3" | Infinite Switch and Pilot Light |
| MDH-55-2524A | 2.5 | 13.3 | 240/1 | 3" | Infinite Switch and Pilot Light |
| MDH-55-3024 | 3.0 | 16 | 240/1 | 3" | Infinite Switch and Pilot Light |
| MDHT-55-1512 | 1.5 | 4.5 | 120/1 | 5" | With 60-250 or 100-550 Thermostat |
| # MDH-55-2512 | 2.5 | 8 | 120/1 | 5" | Pilot Light Only |
| # MDHT-55-2512 | 2.5 | 8 | 120/1 | 5" | With 60-250 or 100-550 Thermostat |
| MDH-55-2524 | 2.5 | 8 | 240/1 | 5" | Infinite Switch and Pilot Light |
| MDHT-55-2524 | 2.5 | 8 | 240/1 | 5" | With 60-250 or 100-550 Thermostat |
| MDH-55-3024 | 3.0 | 9.5 | 240/1 | 5" | Infinite Switch and Pilot Light |
| MDHT-55-3024 | 3.0 | 9.5 | 240/1 | 5" | With 60-250 or 100-550 Thermostat |
| MDH-55-25243 | 2.5 | 8 | 240/3 | 5" | Pilot Light Only - No Cord |
| MDHT-55-25243 | 2.5 | 8 | 240/3 | 5" | With D-33 Control (60-250 3 Phase) |
| MDH-55-2548 | 2.5 | 8 | 480/1 | 5" | Terminal Box Only - No Cord |
| MDHT-55-2548 | 2.5 | 8 | 480/1 | 5" | With D-33 Control (60-250 3 Phase) |
| MDH-55-25483 | 2.5 | 8 | 480/3 | 5" | Terminal Box Only - No Cord |
| MDHT-55-25483 | 2.5 | 8 | 480/3 | 5" | With D-33 Control (60-250 3 Phase) |
| MDH-55-4524 | 4.5 | 8.5 | 240/1 | 8-1/2" | Pilot Light Only - No Cord |
| MDHT-55-4524 | 4.5 | 8.5 | 240/1 | 8-1/2" | With 60-250 or 100-550 Thermostat |
| MDH-55-45243 | 4.5 | 8.5 | 240/3 | 8-1/2" | Pilot Light Only - No Cord |
| MDHT-55-45243 | 4.5 | 8.5 | 240/3 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| MDH-55-4548 | 4.5 | 8.5 | 480/1 | 8-1/2" | Terminal Box Only - No Cord |
| MDHT-55-4548 | 4.5 | 8.5 | 480/1 | 8-1/2" | With 60-250 or 100-550 Thermostat |
| MDH-55-45483 | 4.5 | 8.5 | 480/3 | 8-1/2" | Terminal Box Only - No Cord |
| MDHT-55-45483 | 4.5 | 8.5 | 480/3 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| MDH-55-6024 | 6.0 | 11.3 | 240/1 | 8-1/2" | Pilot Light Only - No Cord |
| MDHT-55-6024 | 6.0 | 11.3 | 240/1 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| MDH-55-60243 | 6.0 | 11.3 | 240/3 | 8-1/2" | Pilot Light Only - No Cord |
| MDHT-55-60243 | 6.0 | 11.3 | 240/3 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| MDH-55-6048 | 6.0 | 11.3 | 240/1 | 8-1/2" | Terminal Box Only - No Cord |
| MDHT-55-6048 | 6.0 | 11.3 | 240/1 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| MDH-55-60483 | 6.0 | 11.3 | 240/3 | 8-1/2" | Terminal Box Only - No Cord |
| MDHT-55-60483 | 6.0 | 11.3 | 240/3 | 8-1/2" | With D-33 Control (60-250 3 Phase) |
| # Not suitable for standard 120 volt duplex outlet. | |||||