CurseForge · Minecraft mod
Cleanroom Covers
Introduces two covers to GregTech: CEu Modern that grant a single-block machine cleanroom access
Quick answer
Which Cleanroom Covers release should I use?
Cleanroom Covers cleanroomcovers-1.20.1-1.1.0.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Cleanroom Covers required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Cleanroom Covers cleanroomcovers-1.20.1-1.1.0.jar need?
cleanroomcovers-1.20.1-1.1.0.jar. Change the file and its required mods may change too.
Install GregTech CEu Modern first. We found matching files for this game-version and loader setup. 8 come through another mod in the chain.
8 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Cleanroom Covers without breaking your instance.
Built for Cleanroom Covers cleanroomcovers-1.20.1-1.1.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use cleanroomcovers-1.20.1-1.1.0.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install GregTech CEu Modern first. We found matching files for this game-version and loader setup. 8 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside cleanroomcovers-1.20.1-1.1.0.jar. It opens that exact file at the source.
About this project
What does Cleanroom Covers add?
Cleanroom Covers (GTCEu Modern addon)
About
A 1.20.1 GregTech: CEu Modern addon that adds two covers for granting cleanroom access to single-block machines.
Features
Introduces two covers that grant a single-block machine cleanroom access…no multiblock cleanroom required.
| Cover | Grants | |
|---|---|---|
| Cleanroom Cover | CLEANROOM |
|
| Sterile Cleanroom Cover | STERILE_CLEANROOM |
- Single-block only: covers can't be attached to multiblock controllers or parts.
- One per machine: a machine accepts a single cleanroom cover; attaching a second is blocked on every face.
- Stacks with real cleanrooms: if the machine is also inside an actual cleanroom, both the room's type and the cover's type apply (e.g. a machine in a regular cleanroom with a Sterile cover satisfies recipes needing
CLEANROOMandSTERILE_CLEANROOM).
Usage
Hold a cover and right-click the face of a single-block machine to attach it. The machine immediately counts as being in a cleanroom of the cover's type for recipe purposes. Remove it with a crowbar like any other cover.
Recipe
Cleanroom Cover

Sterile Cleanroom Cover

Requirements
- Minecraft 1.20.1 (Forge)
- GregTech CEu Modern
License
Licensed under LGPL-3.0, matching GregTech CEu Modern.
Project description from CurseForge.
Pick your setup
Cleanroom Covers by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Cleanroom Covers versions and loaders
cleanroomcovers-1.20.1-1.1.0.jar
21 Jun 2026
cleanroomcovers-1.20.1-1.0.0.jar
19 Jun 2026
Looking for an older file? The official CurseForge project page is in Resources.