Product details:

Auralex Wedgies, Box of 24 are 1' squares of 2-thick Studiofoam ideal for spot-treating studios, practice rooms, or home entertainment centers. A great solution for small flutter echo problem areas.For installation, Studiofoam Wedgies require Auralex Foamtak spray adhesive box (sold separately, - see #422605), which allows you to remove the foam later. For more permanent installation use Tubetak (sold separately - see #422606) or Tubetak Pro liquid adhesive applicators (sold separately - see #472436).1 Foamtak covers up to 96 square feet.1 Tubetak/Tubetak Pro covers up to 24 square feet.