Foam Panel Category — 1-Pack, 24 × 72 × 1-inch Black Open-Cell Polyurethane Foam Sheet; Density: 1.8; Hardness: 44 ILD; For Cushion Replacement, DIY Projects, and Soundproofing

This is an oversized sheet of open-cell polyurethane foam, measuring 24 inches in width, 72 inches (6 feet) in length, and 1 inch in thickness. It features a black color, a density of 1.8 lbs/ft³ (approx. 28.8 kg/m³), and a hardness rating of 44 ILD (Indentation Load Deflection), classifying it as a medium-to-firm foam. While its open-cell structure provides some inherent sound-absorbing properties, its primary intended use is as a replacement material for cushioning and padding—such as for furniture seat cushions, sofa backrests, mattress core layers, pet beds, or as a base layer for soundproofing insulation. It can be easily cut into any desired shape using an electric knife or a long-bladed utility knife. The 1-inch thickness makes it ideal for stacking applications. For acoustic purposes, you can utilize this sheet as a foundational base layer, then adhere pyramid- or wedge-patterned acoustic foam panels to its surface to achieve enhanced high-frequency absorption. Each package contains one sheet, covering an unfolded surface area of ​​12 square feet. As the product is shipped in a compressed, rolled format, please lay it flat for 24 hours upon receipt to allow it to fully recover its original thickness. This product does not come with a self-adhesive backing; spray adhesive must be applied separately by the user for installation.