Baldor-Reliance RPM AC Slide Base, 419914-9A, FL1831 FrameApplication(s)Used for adjustable belt tension on belted application not suitable for wall or ceiling mounting. Product Specifications FRAMEFL1831 BRANDBaldor-Reliance RPM-- MANUFACTURERS PART NUMBER419914-9A DIMENSION SHEET609957-9 DESCRIPTIONRPM AC Slide Base