Learn how to install a central vacuum system with outlets on four floors and hidden PVC piping.
Drop a plumb bob through the hole into the laundry chute, allowing it to hang all the way from attic to the basement to ensure that the holes align. Adjust them as necessary to accommodate the PVC pipe between the power unit in the basement and the attic. Properly aligned piping runs will join fittings/elbows more easily and hold a vacuum seal with pipe adhesive later, so check alignment at each step.
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