Double rackmount flange and handles 88.1mm H (2U) – 4 brackets, front handles. This product includes 4 handles, 4 flanges, metric fasteners, mounting screws. Flanges secure the instrument to the front mounting column of the rack. This product uses the Keysight System II Plus color scheme. All Keysight flange kits attach to the instrument using pre-existing holes in the instrument case. This kit includes both flanges and handles. Instrument rackmount kits alone are not designed to support the full weight of most instruments and may deform or break. Rails and slides are available to support the rear of the instrument.