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Ok great its 3 1/2 inch . so grind off the ledge around the perimeter ( its only likely to get in the way of any new wc pan ). Buy mcalpine extension ,code
WC -EXTB. That has a 3 1/2 ich rubber seal ( multi finned ) . you will need to cut it so around 80 mm is above ground. That goes into the hole ,you can then fit an angled pan connector of your choice into it. I would then cover the exposed metal ,flaunched to the EXTB , with thinish screed.
WC -EXTB. That has a 3 1/2 ich rubber seal ( multi finned ) . you will need to cut it so around 80 mm is above ground. That goes into the hole ,you can then fit an angled pan connector of your choice into it. I would then cover the exposed metal ,flaunched to the EXTB , with thinish screed.