Library › Hardware › 19-inch rack units and mounting ears

rack-ear-1u

1U rack ear test plate, 43.66 mm panel height; 10 × 7 slots at 6.35 / 22.225 / 38.1 per U, 8.75 from the faceplate edge

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

dimension1U
mm44.45
Let your AI pull this. Add https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.
Set it up →

From the full sheet

19-inch rack units and mounting ears (EIA-310): every size, notes, mating features and sources. What are 1U rack mount dimensions?

Other sizes