Welcome to Installation Plus. We have over 20 years experience serving from Kansas City, MO to Joplin MO. We offer a full range of garage door products, garage door repair, and garage door service in Nevada, Harrisonville, MO and the surrounding areas. Installation Plus specializes in large commercial doors and openers. We are also your local authorized Liftmaster dealer. From gate openers to overhead door openers to commercial openers you can trust Installation Plus and LiftMaster. We are an authorized dealer for CHI, Doorlink, Delden, Clopay, and LiftMaster.