Auralex Studiofoam CornerFills / CornerFill Cubes

$ 109.99
Shipping calculated at checkout.

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

CornerFill Cubes are a terrific way to finish out trihedral corners where three LENRD Bass Traps come together. Great for larger (non-commercial) rooms.

Even without LENRDs, CornerFill Cubes offer excellent bass absorption and can look really cool, especially with other Auralex treatments butting up to them.

CornerFills are available in 3 different sizes and 3 colors. Please see the chart below for specifications of each size.

Product Size Quantity Coverage Uses
2" CornerFills 2"x2"x24" 36 per box 72 linear feet Corner Space Between 1" or 2" Studiofoam Panels
4" CornerFills 4" x 4" x 24" 9 per box 18 linear feet Corner Space Between 4" Studiofoam Panels
12" CornerFill Cubes 12"x12"x12" 2 per box 6 square feet Trihedral Corners (Corner of Ceiling + 2 walls)



  • Use on walls, corners and ceiling 
  • Tames low-end rumble
  • Reduces room modes
  • Smooths out low frequency response of your space
  • Precision surface profiling
  • Improve speech intelligibility
  • Commercial and residential applications
  • Eliminates standing waves and flutter echoes
  • Reduces unwanted acoustical reflections
  • Decreases slap-back and room ring
  • Won't crumble with age
  • Made using melamine-free StudioFoam formula
  • Install with 1 Foamtak or 1 Tubetak Pro


  • 36 - Auralex 2"x2"x24" CornerFills     OR
  • 9 - Auralex 4"x4"x24" CornerFills       OR
  • 2 - Auralex 12"x12"x12" Cornerfill Cubes


  • Treatment Type: Bass Trapping
  • Available Colors: Charcoal Grey, Burgundy, and Purple
  • Manufacturer Part No.:
    • Charcoal Grey: 2X2CFCHA / 4X4CFCHA / 12CUBECHA / 12X12CFCHA
    • Burgundy: 2X2CFBUR / 4X4CFBUR / 12CUBEBUR / 12X12CFBUR
    • Purple: 2X2CFPUR / 4X4CFPUR / 12CUBEPUR / 12X12CFPUR

Auralex’s famous Studiofoam® acoustical panels are the world standard and are the most cost-effective choice for attaining accurate sound. Millions of recording studios, broadcast facilities, churches, schools and home theaters trust Studiofoam® because of its time-proven performance, longevity and value. Auralex offers the largest selection of sizes and shapes in the industry, complementing many decors. Our proprietary melamine-free Studiofoam formula is long-lasting and won’t crumble like other brands can.