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I’m trying to replace the below fitting in order to drain vent both a 2” run (sink, tub, shower) as well as a 3” run (toilet). The original stack was 4” cast iron and will be replaced with 3” PVC. I’ve come up with two solutions but both have issues. The issue with one is that I’m using an...

Hello, BACKSTORY- I’m in the middle of renovating a kitchen and in doing so need to relocate my primary supply plenum that services the entire first floor. It was previously 10” tall duct board and located in a drop ceiling over a 1/2 bath. GOAL- I am relocating the 1/2 bath and in doing...

Hello, I currently have a duct board trunk from my air handler in the attic to a supply plenum in my kitchen which services the entire first floor. The trunk travels through a closet on the second floor. I need to relocate the plenum on my first floor which means moving the trunk over a foot...