This plate fits the following Hummingbird models:

Matrix 47-3D           Fishfinder 515
Matrix 37                Fishfinder 595c
Matrix 27                Fishfinder 585c
Matrix 17                Fishfinder 565                      
Matrix 12                Fishfinder 535
Matrix 10                Fishfinder 525          
Matrix 87c               Fishfinder 515            
Matrix 77c               100, 300, 700 Series
Matrix 67                 Elite 5 Series