| ▲ | dietr1ch 2 hours ago | |
At some point they realised and the newer ones have a dupex air duct so you can keep air pressure even | ||
| ▲ | HPsquared 37 minutes ago | parent [-] | |
Huh, just like a balanced flue. | ||
| ▲ | dietr1ch 2 hours ago | |
At some point they realised and the newer ones have a dupex air duct so you can keep air pressure even | ||
| ▲ | HPsquared 37 minutes ago | parent [-] | |
Huh, just like a balanced flue. | ||