HVAC air handler transition fitting
When we raised the ceiling, we also had to raise the duct work. This necessitated a new hook up of the main duct running through the living area to the air handler. Here you can see the transition fitting I designed to do that being cut out, behind it is the card board mock up I made. The Styrofoam pieces are going to be glued inside for insulation. I covered the foam up with foil tape so it wasn’t exposed to the air we breathe!