Return SP48 Mounting Plate for: 3W-48iB2 / 56iB2 Price : $25.00 Quantity : **Add To Cart Supersonic SP48 Mounting Plate Fits: 3W 48iB2 / 56iB2   SP48 Specifications Width 4.70" Height 3.80" Thickness 3/16" Mounting Hole Spacing Horizontal: 4.25" Vertical: 2.30" Weight (w/Hardware) 2.8 Oz     Specifications Subject To Change Without Notice