Auralex CornerFill 3x3x24 Inch Foam (Burgundy, Box of 16)

CornerFills are sections of flat-cut Studiofoam corner acoustic absorbers that are beneficial in two ways. Aesthetically, they give you smooth, clean edges against which to butt your acoustic wall treatments and acoustic foam bass traps for a more professional appearance. Acoustically, they smooth out the excess low frequency energy that congregates in room corners.