“Diameter of holes in mounting base I have some light speakers that I can hand from drop ceiling track, but I need to know what the diameter of the hole in the base is so I can tell if the screw for the drop ceiling mounting hardware will fit.”

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• They would probably claim 1/4-inch but 17/64 drill bit fits snugly in slotted hole.

  Answered by Brandmand 9 years ago

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• We cannot recommend using anything but the provided hardware to install your speakers.

  Answered by RocketfishCustomerSupport 9 years ago

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