Customizable 19" Keystone Panel

A fully customizable

19" Rackmount Keystone Panel

Snap your keystone jacks (RJ45, HDMI, USB, blanks, you name it) into a tidy 19" (482.6 mm) rack panel. Design a single row or a multi-row grid, mix rotations and labels, and the panel sizes itself in whole rack U.

• 🔌 Any keystone jack: standard footprint; tune the fit with one tolerance knob
• 🧱 Strip or Grid: one row, or up to four independently configured rows
• 📐 Auto-height: describe the rows, the panel grows to the smallest rack U that fits
• 🧩 Prints in two halves: joined by a snap-in lock pin, so a full 19" panel fits your bed
• 🏷️ Snap-in labels: printable label plates click in beside each port

🛠️ How It Works

Pick Strip for a single row or Grid for up to four. Tell it how many keystones, which way they face, and where the labels go, and the panel auto-fits the rows in whole rack U and bolts into any standard 19" rack.

Because a full 19" panel is wider than most print beds, it prints as two halves that clip together with a split lock pin down the centre seam. The jacks align from the seam outward so the assembled panel reads as one continuous row.

It's also intentionally beefier than the 10": an opinionated 4 mm panel (vs 2 mm) with back braces for stability, so a full-width rack panel doesn't flex.

Jacks press in from the back and catch on their own clips; the optional snap-in label plates print separately.

📦 What's in the Download

The bundled print profile holds the showcase panels only. For your own layout, start the customizer. The rack frame isn't included, but HomeRacker has you covered there too: build a full 19" rack with the Modular 19" Server Rack and mount your keystone panels right in.

💡 No rack at all? Skip the rackmount and go HomeRacker-native instead. The same keystone panel, mounted straight into any HomeRacker frame for maximum flexibility.

📐 Customization Guide

Every parameter, plus how to print and join the split halves (and a pin-insertion tip that genuinely helps), is covered in the attached Customization Guide PDF (shared with the 10" version).

🧩 The Keystone Panel Family

Same snap-in keystone system, three mounts. Pick what you need:

• 🏠 HomeRacker-native: mounts into any HomeRacker frame
• 🗄️ 10" rackmount: bolts into any standard 10" rack
• 🗄️ 19" rackmount, this model

🏡 What is HomeRacker?

HomeRacker is a universal modular rack building system. It's based on an open specification. Find out more here:

HomeRacker - Core on MakerWorld

or visit https://homeracker.org/

🗂️ KellerLab Essentials

These keystone rack panels fit any standard EIA rack (they're not HomeRacker-specific), so you'll find them in KellerLab Essentials, my collection of models for building out a homelab.

🤝 Community Driven

I created HomeRacker - Core as an open specification. Anyone can create and share their own extensions and models based on it without licensing restrictions. All I ask for is attribution!

🧑💻 For Designers

Have an idea and the skills? Go ahead, I'd be happy to link and feature your creations in the catalog.

💭 For Idea-Generators

Not familiar with CAD? Pitch your idea to me with as much detail as possible!

Check out the Community Catalog

Pitch ideas or vote for them here on GitHub!

Join the KellerLab Discord Server: Discord Invite

☕ Support

If you appreciate this model and wanna buy me coffee, you can do so here: https://ko-fi.com/kellervater

Or simply scan this QR-Code:

🗓️ Changelog

• 27.06.2026 ✨ Label plates now lay out in a compact, print-bed-friendly grid instead of one long row that overran larger plates
• 🆕 Initial Release

This model is part of the KellerLab Essentials collection, models for building out a homelab. It builds on the open-source HomeRacker - Core system. The base building blocks changelog can be found in the Core CHANGELOG.

This description was generated from Markdown using md-to-mw — version-controlled descriptions for easier maintenance.