How to hang foam-Acoustics Forum-Acoustic Fields Forum

I press fit the 18″ x 25″ x 2″ foam into a wooden frame slightly smaller than the foam . The foam is typically 17 15/16″ x 24 15/16″ x 1 15/16″. I therefore build the frames from 1″ x 3″ select pines with an inside dimension of 17 7/8″ x 24 7/8″. The foam would then press fit nicely into the frame. By using 1″ x 3″ select pine you create a 1/2″ air gap on the back which improves the performance of the panel. I cover the front with acoustic foam from Guildford of Maine. I mount the frame using an L bracket on the frame and a Z strip on the wall.