Return SP275 Price : $45.00 Quantity : **Add To Cart Supersonic SP275 Mounting Plate Fits: 3W 275xiB2   SP240 Specifications Width 5.00" Height 6.375" Thickness 0.25" Mounting Hole Spacing Horizontal: 4.250" Vertical: 5.625" Weight (w/Hardware) 11.0 Oz     Specifications Subject To Change Without Notice