Open Roller Garage Door
By Huu Khanh Nguyen · Updated October 28, 2026 · roller-door, open-installation, console, heroal-rd-75, alutech, aluprof-knj, garage-door
A roller garage door whose slat curtain winds onto an open roll tube between two end plates above the opening, with no box around it. Slat profile Tubular motor on either side or hand operation Roll tube and guide rail size Finish colour
Parameters
| Name | Default | Unit |
|---|---|---|
| Clear width | 3000 | mm |
| Clear height | 2500 | mm |
| Slat height | 75 | mm |
| Slat thickness | 20 | mm |
| Roll tube | 70 | mm |
| Guide rail width | 95 | mm |
| Drive side | left | |
| Finish | white | |
| Opening travel | 0 | mm |
| Overall width | clearWidth + 2 * railWidth | mm |
| Overall depth | capSize | mm |
| Overall height | clearHeight + capSize | mm |
| Slat tip from rail closed end | 38 | mm |
| Roll tube circumradius | shaftDiameter / 2 / Math.cos(Math.PI / 8) | mm |
| Curtain wound at rest | Math.PI * (2 * shaftRadius + thickness) | mm |
| Guide rail depth | Math.min(35, Math.max(28, thickness + 14.36)) | mm |
| Wall face | (railDepth - thickness) / 2 | mm |
| Coil radius bound | Math.sqrt(shaftRadius ** 2 + (layerLength + clearHeight + 2 * coverHeight) * thickness / Math.PI) | mm |
| Roll axis height | clearHeight + openRadius | mm |
| End plate size | 2 * openRadius + wallY <= 360 ? 360 : 405 | mm |
| Slats hanging | Math.floor((axisHeight - lift) / coverHeight) | |
| Coil radius | Math.sqrt(shaftRadius ** 2 + (Math.ceil((axisHeight + layerLength) / coverHeight) - hanging) * coverHeight * thickness / Math.PI) | mm |