Ptac Lateral Duct Kit, For Use With Packaged Terminal Air Conditioner Or Heat Pump, Kit Includes:Plenum (1), Extension Duct (1), Extension Duct Wall Trim Kit (1), Wall Register (1), End Cap (1), Attachment Screws (14), Right Support Bracket (1), Left Support Bracket (1), Weight:29 Lbs , In Mfg Box, Made in USA. Duct Is L: 44" W: 7" H: 8" Extension Is 48"