By Robert72 - 1/23/2019 7:54:30 PM
Just wondered if anyone could explain the difference between the above? The high temp system seems simpler and cheaper.
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By oekmont - 1/25/2019 8:44:15 PM
You can even get 300mm tubing at amazon. In Germany you have to search for "kg rohr dn300". Every good hardware store should get their hands on that dimension. This is used in every bigger building.
If you do the plug with primer etc, you should definitely try to get a good finish on the plug. There is too much danger of sanding through the gelcoat.
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