By Huu Khanh Nguyen · Updated October 29, 2026 · gate, bi-fold gate, top guided, speed gate, folding gate, security gate
A double-leaf bi-folding gate guided from an overhead beam, whose four leaf sections fold back beside the drive columns to seal the whole opening. Aperture width and aperture height Leaf section, column and finish Opening motion in the plan symbol
| Name | Default | Unit |
|---|---|---|
| Aperture Width | 4709 | mm |
| Aperture Height | 3256 | mm |
| Opening Angle | 0 | ° |
| Finish | white | |
| leafCount | 2 | |
| postWidth | 220 | mm |
| leafDepth | 60 | mm |
| groundClearance | 30 | mm |
| stackClearance | (709 - 2 * postWidth) / 2 - 2 * leafDepth | mm |
| postGap | stackClearance | mm |
| foldGap | stackClearance | mm |
| pinOffset | stackClearance + leafDepth / 2 | mm |
| pinToFace | pinOffset - postGap | mm |
| leafSpan | (apertureWidth - 2 * postWidth) / leafCount | mm |
| height | apertureHeight - 256 | mm |
| leafLength | (leafSpan - postGap - foldGap) / 2 | mm |
| foldPivot | leafLength + foldGap / 2 - pinToFace | mm |
| Width | apertureWidth | mm |
| Height | apertureHeight | mm |