This seal features a rigid "C Channel" section that slides onto the track located on the wiper seal. The bulb seal is designed to allow room for and protect cables. It's main function is to seal against the RV when the slide-out is closed - protecting your RV from from extreme weather and pests.
5/8" bulb wide
5/8" bulb height
Commonly used with wiper seal #70-3709-99.