[amishsixstringe]

This is the beginning of the framing for the isolation room.







You can see the boxes I built to maintain the seal of the walls. Without them there is a significant flanking path. Even the holes where the romex comes into the box is drilled for a really tight fit and then caulked on both sides.





Here is an mdf box made for the round recessed light fixtures.







HVAC muffler designed for 7" round flex pipe. The baffles in the muffler carry the same volume of air as the 7" round pipe until the last bend where it gets gradually more volume until the opening which is double the volume. This helps the air to slow its speed as it reaches the vent grill, keeping it quiet.





Neil