| Hatco
| Description | Model | OEM # | | | 
| Heating Element Booster A = 9-13/16", 2-1⁄2" Square Flange w/Gasket 208V, 3000W | Compact (6KW), Imperial/Powermite (6KW) | R02.04.302.00 | |
| Heating Element Booster A = 9-13/16", 2-1⁄2" Square Flange w/Gasket 240V, 3000W
| Compact (6KW), Imperial/Powermite (6KW)
| R02.04.303.00 | |
| Heating Element Booster A = 9-13/16", 2-1⁄2" Square Flange w/Gasket 208V, 3500W
| Compact (7,10.5KW), Imperial/Powermite (7,10.5KW)
| R02.04.350.00
| |
| Heating Element Booster A = 9-13/16", 2-1⁄2" Square Flange w/Gasket 240V, 3500W
| Compact (7,10.5KW), Imperial/Powermite (7,10.5KW) | R02.04.351.00
| |
| Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket 208V, 4000W
| Compact (4, 24KW; 12KW, 3-Phase only), Heavy Duty (12KW, 3-Phase only), R02-04-400 Imperial/Powermite (24KW; 12KW, 3-Phase only)
| R02.04.400.00 R02-04-400 02-04-400
| |

| Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket 240V, 4000W
| Compact (4, 24KW; 12KW, 3-Phase only), Heavy Duty (12KW, 3-Phase only), R02-04-400 Imperial/Powermite (24KW; 12KW, 3-Phase only)
| R02.04.401.00 | |  | Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket 208V, 4500W
| Compact (9,13.5,27KW), Heavy-Duty 27,40.5KW), Imperial/Powermite (9,13.5,27,40.5KW)
| R02.04.450.00 R02-04-450
| |
| Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket 240V, 4500W
| Compact (9,13.5,27KW), Heavy-Duty 27,40.5KW), Imperial/Powermite (9,13.5,27,40.5KW)
| R02.04.451.00 R02-04-451
| |
| Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket 208V, 5000W | Compact (5,15,30KW), Heavy-Duty (15,30,45KW), Imperial/Powermite (15,30,45KW)
| R02.04.500.00 R02-04-500
| |
| Heating Element Booster A = 11-1/2", 2-1⁄2" Square Flange w/Gasket | Compact (5,15,30KW), Heavy-Duty (15,30,45KW), Imperial/Powermite (15,30,45KW)
| R02.04.501.00 R02-04-501
| | Hatco
| Description | Model | OEM # | |
|