| extension name | file type | Classification |
|---|---|---|
| ULD | Unified Luminaire Data File | CAD file |
| UNT | AutoCAD Unit Definition File | CAD file |
| UPF | Unified Power Format File | CAD file |
| extension name | file type | Classification |
|---|---|---|
| ULD | Unified Luminaire Data File | CAD file |
| UNT | AutoCAD Unit Definition File | CAD file |
| UPF | Unified Power Format File | CAD file |