3"solvent soil pipe 82 mm Threaded Tank Connector Double socket version.
The 82 mm pipe will fit in to both sides
Ideal for filter systems and skimmers etc.
Supplied with a flat rubber gasket
Socket depth in to which you would glue the 82 mm pipe is around 40 mm on each side.
Would require a hole size of 95 mm diameter or more
Outer flange is around 130 mm total,outer flange being around 18 mm wide