The work
Measured on site, built in the shop, installed in a day
The box was built to the measurements taken on the first visit, in the workshop rather than in the apartment. That was a shop day — about six to seven hours including buying the materials — and it meant the cutting and sanding happened off-site: no sawdust in a home that had just been put back together. The box was primed and painted in the shop and delivered ready to install.
Day one on site: the box was set under the window and fixed in place, and the flood-damaged section of wall and every hole in the drywall were patched and skimmed. The box has a vented grille on top and an open bottom, so the unit still pulls and pushes air the way it should.
Day two: the box got its finish coat in place, and the repaired walls were repainted so the patches blended into the wall. The apartment was left clean, with the unit hidden and the wall smooth.