Very poor, poor workmanship. Vents were attached to just the drywall with screws that were not all the way in leaving the AC diffuser with no support at all. No wood framing either to hold the AC diffuser's heavy weight. Drywall was cut in several places as they were trying to figure out things. Crew did not bring a drop cloth wood floor was full of drywall pieces, debris and dust. Vents were not flushed with drywall and the support handles were sticking out making it impossible to have a flat wall. AC vent opening was not sealed either. I ended up hiring someone else to come and fix all their work. I would not hire them at all. They do not do a good job and honetly should not be in business because it does not seem they know what to do. read more