These portable acoustical panels are the perfect addition to any Drum Shield. Sound Traps will absorb the sound of the drums before it can be reflected by the DrumPerfect Drum Shields resulting in a lower stage volume and the ultimate drum sound. An industry high NRC of .90 for great absorption. Sound Trap consists of two 2 foot wide panels hinged in the middle and these tall traps can be placed either behind or in front of the drum set. A 2-Pak is 8 linear feet wide. Great for home studio, acoustic panel, acoustic panels, drum noise reduction, sound panel, sound panels, sound reduction, sound absorption, noise reduction, and general drumming.