| H3-4-10 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-12 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-14 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-16 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-18 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-4 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-5 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-6 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |
| H3-4-8 | Residential grade harmony disk silencer providing extraordinary performance in a compact size | GE | | |