I had a 30ft hose and I need a 45-50 hose. I bought some 50ft standard hoses but returned them as they were poorly made and not strong. I then dared to buy only this extension. WHAT A SURPRISE. It was very well made and even better than my existing hose. I plugged it straight into the wall and then plugged in my old Nutone hose and it works great. Now I can reach all the places I could never reach. I also have an almost new one (it didn't have a box) and it was in excellent condition. I highly recommend.