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Can anyone confirm the OD of discharge/outlet of a D1SC for me? My HOB owners manual and Procharger both state 3"; I am pretty sure it is closer to 3.25".
I currently have an F1-a I can measure for you, but it's the same size as my D1SC was, and I know I'm using a regular 3" silicone coupler to attach to it. Maybe it stretches a little, but I'll measure for you.