I found that the floorhead hose on my Shark Lift Away had snapped, causing a loss of suction. I first went to the brand's website to order this and new filters and the price was quite high. So I checked out Revain and found them for 1/3 the price. It works great, I didn't realize how much suction my vacuum had lost! Once I replaced that hose and installed new filters, it was like having a new vacuum!