This 5-foot flexible aluminum vent hose is a bendable, accordion-style exhaust duct that connects your dryer's exhaust outlet to the wall vent, allowing for easy routing around obstacles in tight laundry spaces. The flexible design lets you position the dryer close to the wall even when the vent connection is not perfectly aligned. Replace this hose if it is crushed, torn, or disconnected, as a damaged hose can cause poor drying performance, excess heat buildup, or a lint fire hazard.