PVC Sch. 40 90° Street Elbow
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Q:Is this a 4 inch inside coupling. That is, does it fit inside the existing pipe and allow connection of another 4 inch pipe coming out of the elbow? I have a four inch PVC pipe sealed in a brick wall as part of a radon mitigation system that I need to extend upward.
A:there is no inside coupling. the street side is the same size as the pipe and will need a coupling the other side fits over the pipe.