Rehung downstairs buckets. Attached and ran exhaust fan ducts. Installed fresh air for main downstair system. Re-attached and sealed both supply and return air plenums for main downstairs system. Mounted a new disconnect for main downstairs system. Reframed return for main downstairs system. Ran and wired in thermostat wire for secondary downstairs system. Installed new single wall pipe for stove range. Installed new single wall pipe for dryer vent. Built new return plenum and re-framed the third return. All 3 primary drain lines are ran for the plumber to tie into his vents.