Superior Impact Sound Reduction: Enjoy quieter spaces with exceptional soundproofing Superior Durability: Retains its structure and acoustical value over time Ideal for Laminate and Engineered Hardwood Floors: Perfect support for high-quality flooring projects in both commercial and residential spaces Outperforms Traditional Foam Underlays: Dura-Son's rubber composition protects your floors from damage that would typically accelerate with a foam underlayment Suitable for Radiant Heated Floors Environmentally Friendly: Made with 95% recycled rubber bonded with synthetic rubber By Dura: Trusted and simple flooring solution Coverage: 48 in. x 25ft., provides 100 square feet Dura-Son 3.5mm 1/8’’. High performance acoustical underlayment for laminate and engineered hardwoods floors. 25ft. long. 4ft. wide. Covers 100 sq.ft. Acoustic rating FIIC 69. Made from recycled rubber, does not collapse over time, easy to install, guaranteed to work with radiant heated floors, contributes to LEED credits, Green Label Plus certified.