| Heater Name |
National Stock Number (NSN) |
| Improved Army Space Heater (IASH) Type II |
4520-01-646-3010 |
| Improved Army Space Heater (IASH) |
4520-01-477-0568 |
| Space Heater Arctic (SHA) |
4520-01-444-2375 |
| Space Heater Convective (SHC) 60K |
4520-01-520-6477 |
| Space Heater Convective (SHC) 90K |
4520-01-598-1844 |
| 60K Improved Environmental Control Unit (IECU) |
4120-01-543-0741 (Block I) |
| Heater, Space, Radiant, Large (H-45 Space Heater) Type II, Liquid Fuel |
4520-01-329-3451 |
| Improved Environment Control Units (IECUs) 9K IECU 115/1/60 |
4120-01-592-7940 |
| Improved Environment Control Units (IECUs) 18K IECU 208/3/60 |
4120-01-592-7987 |
| Improved Environment Control Units (IECUs) 18K IECU 230/1/60 |
4120-01-592-7977 |
| Improved Environment Control Units (IECUs) 36K IECU 208/3/60 |
4120-01-592-7949 |