dometic 965 msd with fittings for pump out - anyone done the install?

[Sooner]

I'm ordering the above - and have not been able to find sizes of pump out fittings - what else needed - problems - etc.  Any help severely appreciated
jim

[Frank]

Standard through-deck fitting (with cap) for pump out is 1 1/2 in. Marina fittings mate to that. If you are plumbing...use the white hose made for heads. Costs a bit more but smell doesn't go through.