The specifications are as following:
Internal Width: 80 mm
Internal Depth: 20 mm
External Width: 95 mm
External Depth: 60 mm + (20 mm Fixing) Plate
Length: 162 mm
Fixing Plate: 233 mm x 70 mm
The advantage of this item over the normal suspension units is that it is equipped with well-fit fixing plate with installation hardwares.