The DuraVent Tee Cap 3GVTC is a high-quality chimney pipe made of aluminum, designed for use with 3-inch diameter chimney pipes. This tee cap by DuraVent is a reliable and durable option for connecting and terminating chimney systems in your home. Its sleek design and sturdy construction make it an essential component for maintaining a proper and efficient chimney system for your fireplace or stove.