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NE WI | Mine was 12.1. Get some plexiglass and cut a cover for your sump hole. Attach the 4” pvc pipe to the cover with rtv and out to the fan. Make sure the vent pipe is at least 2’ above the lowest part of your roof so the wind can carry it away. Otherwise it will sink back down and enter the basement again. Caulk around the perimeter of the slab to the walls. This will help seal off the slab and draw a better vacuum. | |
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