Plan a StarTech 4-post open frame 18U
The planner below is set to the StarTech 4-post open frame 18U, 18U. Search your devices to place them.



Most mini PCs, Macs, modems and small switches can't go in a rack on their own. When you add one, the planner puts it in a rack mount made to fit that exact device, from 3D Rack Mounts. Gear that already has rack ears goes straight in.
In a mount made for it
Rack-ready
Open
Tap an open slot to choose where the next item goes. Drag an item to move it (on a phone, press and hold first). Tap it to remove it.
What fits in 18U
The StarTech 4-post open frame 18U gives you 18U of 19 inch rack space: 18 items that are 1U tall, or any mix that adds up to 18U. Gear with its own 19 inch rack ears goes straight in; anything else needs a mount, and the planner shows which.
Example builds that fit
- UniFi network closet in a 10U 19 inch rack
- Plex and media rack in a 10U 19 inch rack
- Proxmox homelab in a 12U 19 inch rack
- Mac mini cluster in a 12U 19 inch rack
Other sizes
- StarTech 4-post open frame 12U
- StarTech 4-post open frame 15U
- StarTech 4-post open frame 22U
- StarTech 4-post open frame 25U
- StarTech 4-post open frame 42U
Popular mounts for 19 inch racks
- Lenovo ThinkCentre Tiny - Fits M70q-M90q & M710q-M920q 1U
- Spectrum Modem w/ keystone jack 2U
- Unifi Cloud Gateway Ultra, Cloud Gateway Max & Gateway Max 1U
- Unifi USW Flex 2.5G 8 1U
- Apple TV 4K 2022 & 2026 (3rd/4th Gen) 1U
- Fortinet FortiGate 40F, 60F & 61F Firewall 1U
- Minisforum MS-01, MS-A2, MS-R1 & MS-03 2U
- Arris Surfboard Modem - SB8200 / SB6141 /SB6190 Models 1U
How it works
- Pick a rack. 10" mini racks (DeskPi, GeeekPi, Lab Rax and similar) or a standard 19" rack, at the height you have.
- Add your gear. Search a device to place it. Gear that already has rack ears, like UniFi and Netgear switches, Synology RackStations, UPS units and PDUs, is in the list too and goes in as rack-ready.
- See what's missing. Anything without ears shows as "needs a mount", with a mount you can buy for it.
- Share it. The link holds the whole layout, so a build can be posted, compared or finished later.