Great acoustic wall panel to work with, and looks great. The felt backing is strong enough, but light enough to work with. whole panel is easy to cut with circular saw, and jigsaw too with fine laminate saw. Attaching to the wall is easy. Just black screw, and drill. The spacing is somewhat irregular, and doesn't match perfectly when 2 panels are joined together.24.12.5 UPDATE.ScrewI remember looking for reviews to see what size screw I should use, so, for drywall, I used 1 inch screw. The drywall this went on is 5/8 inches, and this panel's real felt is about 1/4 I measure.Totaling 7/8, the screw only barely reach through, and wont even touch any wires or pipes. Worry free.To hide cables,I added some plant lights, and wanted to hide the cables. Spacing between woods are only 1/2 inches, and most of the cable covers are wide. (to hide more cords, makes sense) I bought this cord cover and it fits well. (One Cord Cover Wall - 153in Mini Wire Hider, Wire Cover for Hiding Speaker Wire, Baby Monitor Cord - Paintable Wire Channel for Cable Concealer, 9X L17in W0.5in H0.35in, CMR05 Black)