Small Size Stainless Steel Stand Hook Frame Products Size Specification Hook Frame For Automatic Emergency Slow Descent Machine Fixed sheet size: Thickness 4.0mm, Width 200mm, Length 250mm Bottom tube size: 60mm Square Tube, Thickness 2.0mm, Length 1000mm Middle tube size: 50mm Square Tube, Thickness 2.0mm, Length 850mm Arm tube size: 50mm Square Tube, Thickness 2.0mm, Length 660mm Length of fold up size: 1135mm