PlaceSavers® are built from 1/2” MDF and are sized slightly larger than the speaker panel it is reserving space for. This insures that no matter how tight the drywall is hung to the PlaceSaver®, the speaker panel will easily drop into place when the Place Saver is removed. The PlaceSavers® have 1/8” deep x 7/8” wide grooves on the back side that match the mounting flanges on the Stealth Acoustic speaker panels. This insures that if the PlaceSaver® is centered properly on the structural framing the speaker panel will be also.