mhoyeA random question: My place was built with all the plumbing for a central-vac system that I have no intention of using ever. What alternative uses might I have, for this idle series of tubes? Right answers, speculative answers and hilariously wrong answers equally welcome.
Thomas Sibley@mhoye install acoustic horns on the tube ends and have yourself an intercom system the fam can talk/shout into instead of shouting across the house.