Fits,
Molded White Plastic with Broad Flange
Per ABYC "Safety Standards for Small Crafts"
Not Recommended for Use Below the Waterline 
For 1.25" Hose 1 1/8" Max Hull Thickness

Dimensions:
  H = 97 mm
  D = 67.5 mm
  D1 = 33 mm
  d = 41 mm
  d1 = 32 mm
  di = 24 mm