Attwood Thru-transom & scupper for 1-1/2" hose. Acetal construction

Thru-Transom with Scupper For 1-1/2” I.D. hose.
The popular 3876 scupper mounted to a 3875B 1-1/2" thru-hull as a complete assembly. 
Made of high-impact corrosion resistant plastic with rubber flapper valve that opens outward to dump water overboard and closes to help prevent backwash from entering cockpit. 
Hose ID is 1-1/2". 
Overall length is 6-1/4". 
Maximum hull thickness is 3-1/8". 
Overall diameter is 2-7/8".
Installation hole diameter is 2". 
White colour