A drop on replacement cavity cover for many SG style guitars.
Width (at widest part): 85mm
Length (at longest part): 156mm
Length between centre of screw holes (flat side top, as picture):
Left to middle: 95mm
Right to middle: 91mm
Left to right: 140mm
See our printable PDF for size - https://drive.google.com/open?id=19EQJlcbM45uvRMdXHVO-MEXe3_0STxbv