Mounting screw spacing: 78mm center to center
Outside dimensions 3-1/2" x 1-3/4" (89.5mm x 44.3mm)
Inside dimensions 2-3/4" x 1-1/2" (70mm x 38mm)
Bridge Surround Taper: 10.8mm - 9.2mm
Neck Surround Taper: 5.8mm - 4mm
Distance between the screw holes -centre to centre (on the long side): 81mm
Distance between the screw holes -centre to centre (on the short side): 38mm