- Breathing Room Assembly
- Used w/ Ultralite II and Custom 4500 II Air Mask
| Type | Tube Assembly |
| Used With | Ultralite II and Custom 4500 II Air Masks |
| Weight | 0.76 LB |
| Type | Tube Assembly |
| Used With | Ultralite II and Custom 4500 II Air Masks |
| Weight | 0.76 LB |