By Huu Khanh Nguyen · Updated October 29, 2026 · speed-rail, tube-fitting, flange, roof-flange
A cast rectangular base plate with a ring of fixing holes around its edge and a socket in the middle, for an upright fixed down through a roof deck.
| Name | Default | Unit |
|---|---|---|
| Tube outside diameter | 48.3 | mm |
| Socket bore | [49].at([48.3].indexOf(tubeDiameter)) | mm |
| Finish | white |