501 portside sliding glass window

I have a 1989 501 Constellation and the salon port side sliding glass window exploded. I am looking for a replacement. The window is the far stern pane closest to the sliding door on the back. The glass is a very dark purple, almost black, tempered and looks to be laminated. The twin on the starboard side has a brand name in the corner, MARPAC Products.

I have tried looking at MARPAC on-line and put in a call but have come up empty. Does anyone know where I might look to find a replacement window or who I might contact in regard to finding a replacement or having one made?

Thank you...Hasenbeck57