- All dimensions are in mm
- Proﬁle outside dimensional tolerance +/- 2mm
- Angular tolerance +/- 2°
- Straightness 0.15% of length
- Twist 1° per metre length
- Internal radii typically t to 2t, where t=material thickness
- The proﬁle dimensions and angular accuracy shall be measured at a point not less than 150mm from end
*Other intermediate dimensions are also available on request.