Primacoustic CONTROL COLUMN Panel 12" x 48" x 3", Beveled Edge - Grey, 8 PackThe gray Broadway Acoustic Control Column Panels from Primacoustic, which come in a pack of 8, are fabric covered acoustic panels designed to provide an acoustic treatment where you want to control primary reflections, eliminate flutter echo, and reduce standing waves. The panels are made from high density 6 lb per cubic foot glass wool. Each panel is fully encapsulated with micromesh and the edges are resin hardened to assure safe handling during