I have a front door that leaks a lot on the door handle side. It appears to have a groove in the door itself for some sort of weatherstripping (now missing). I can't find any type of weatherstripping that is designed to be attached to the door itself as opposed to the door frame. There is weatherstripping along the frame... but it is clear to me that there is also supposed to be some sort of barrier attached to the side edge of the door. Anyone have an idea as to what the name of this kind of door might be? Does not appear to be 'Kerf' as 'Kerf' only attaches to the frame. Google isn't helping me on this one. Thanks!