Project Source 3.34-ft W x 30-ft L x 1 T Standard Polypropylene Moisture Resistant Flooring Underlayment (100-sq ft / (Roll)Project Source 1mm acoustical advanced underlayment is a closed cell foam underlayment that provides excellent sound reduction and moisture protection under floating luxury vinyl plank and tile. It is compatible with LVT, LVP, MLF flooring. Approved for use with all LVP flooring with and without attached underlayment sold at LOWES Acoustic advanced underlayment provides sound reduction Closed cell foam underlayment provides moisture protection