Yes, Maretron offers optional through hulll housings in bronze and stainless steel. The Maretron part numberfor the bronze housing is M33-100 and the Maretron part number for the stainless steel housing is M33-495-01 The plastic and bronze housings use the same size hole in the hull (2 inches or 51mm) where the stainless stell housing requires a 2.25" or 57mm hole through the hull.