Lenovo 4XF7A99747 Thinksystem 42U Onyx 180MM Advanced Rack Extension KIT

Lenovo 4XF7A99747 42U Onyx 180mm Advanced Rack Extension Kit

Overview

The Lenovo 4XF7A99747 is a 180mm rack extension kit designed for 42U Onyx-series enclosures. When your rack infrastructure needs additional depth accommodation — common in high-density server rooms and network closets where cable management, rear-mounted PDUs, or deep chassis push the limits of a standard rail envelope — this extension kit closes the gap. At 10 lb, it is a structural component: plan its weight into your total rack loading calculations before installation.

Compatibility

Designed for the Lenovo ThinkSystem 42U Onyx rack family. Confirm your specific rack model and rail configuration against Lenovo's compatibility matrix before ordering — Onyx racks ship in several depth and frame variants, and the 180mm extension dimension must align with your existing rail depth to seat correctly. Not intended for non-Onyx or non-ThinkSystem enclosures.

Installation Notes

Manufactured in Mexico (country of origin: MX). No torque specs, tool requirements, or environmental constraints are published in available evidence — consult the Lenovo ThinkSystem rack installation guide for your specific Onyx model before beginning work. Verify total rack weight capacity after adding this extension and any chassis it supports.