Double Leaf, Bottom Door Rubber w/T-Channel Used On The bottom of the Cap Door (SOLD PER FOOT) Used on the bottom of many truck cap doors. Double leaf helps to prevent scratching the truck tailgate as well as adding a weather seal. To install simply slide into the track at the bottom of the door and trim to fit. Bottom Door Seal Approximate width is 1 3/4 inches Has a Tee profile in the center that slides into the standard track at the bottom of the door Double leaf design for added protection. This is the same as A.R.E. truck caps 04148 bottom door seal.