This weatherstrip channel (often called window run channel or window channel felt) runs inside the top and back of the door frame on your classic truck. This weatherstrip reduces drafts, wind noise, window rattle, and allows the roll-up side windows to operate more smoothly. Includes one window run channel with enough material for the drivers or passenger side front window - order two for both front door windows. The window run channel is often replaced along with the division run channel, and windowfelt (both available separately). This part includes the weather seal only and does not come with the metal channel that fits inside the door.