The Steele Rubber Products 7/8" Bulb Seal features a rigid "C" channel section that slides onto a track channel or wiper seal with track. The bulb seal is designed to allow room for and protect cables. Its main function is to seal against the RV when the slide-out is closed, protecting your RV from extreme weather and pests. Ideal for the Evergreen Bayhill 5th Wheel. 7/8"H x 1"W x 15'L. Steele Rubber Products 7/8" Bulb Seal with Domed Channel, 15' long