Do you need a replacement bearing for your Above Floor Slide-Out? Look no further than Lippert Components Replacement Roller Bearing for Above Floor Slide-Outs! The dimensions of this roller bearing are 3/8 - 24 x 1.375". The Lippert Above Floor Slide-Out System is a rack and pinion style slide system. Utilizing a bi-directional electric motor to actuate the drive shaft, the slide-out room is extended and retracted from the same source. The actuator has a built-in automatic braking feature. The Lippert Above Floor Slide-Out is designed as a negative or positive ground system. Refer to manufacturer recommendations to ensure a proper fit.