Started Ductwork removal and planned new duct system layout. New supply plenum new return plenum. All duct work hung taped and mastic. 4 new return cut ins added. 3 12x12 filter back grills and 1 18x18 filter back grill. Air purifier installed. Work area cleaned and tidy. Air flow is great. text static pressure .68 customer was in a hurry and had already locked up and got just got a quick one on the static pressure job complete