78 in. (6.5 ft.) x 61.5 ft. (400 sq. ft.) DamPro XL Waterproof Moisture Barrier Foundation Wrap/Floor Underlayment

It is ideal for damp proofing and drainage in basements and underground walls. It creates an air gap between soil and wall and hinders moisture penetration. Can be used at an underlayment under laminate on basement floors w/o OSB or Plywood.”,”highlights”:[“Crafted to prevent moisture by creating an air gap for stability”,”Mold- and water-resistant construction ensures long-lasting use”,”Lightweight design allows easy installation”