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I’m still struggling with all this nonstandard dust collection fittings and I can never remember what fits what. So I put some together and took a photo so I can figure out what I need whenever I change stuff. Just thought it might be helpful to someone.
Note the Rockler 4” hose to 4” Sch20 drain pipe adapter shown in the lower left doesn’t fit anything around these parts so that was a complete waste of money.
I can’t remember who makes this 4in to 2 1/2in hose adapter, but it fits perfectly inside Triplewall Pipe Solid waste pipe thats sold at all the big box stores around here. Also the Rockler 4” hose to 4” Sch20 drain pipe adapter does fit into the coupler side if you push it all the way in past the shoulder and use tape to hold it in, but there are other fitting that are cheaper that actually fit.

Note the Rockler 4” hose to 4” Sch20 drain pipe adapter shown in the lower left doesn’t fit anything around these parts so that was a complete waste of money.
I can’t remember who makes this 4in to 2 1/2in hose adapter, but it fits perfectly inside Triplewall Pipe Solid waste pipe thats sold at all the big box stores around here. Also the Rockler 4” hose to 4” Sch20 drain pipe adapter does fit into the coupler side if you push it all the way in past the shoulder and use tape to hold it in, but there are other fitting that are cheaper that actually fit.
