First Step 630-Square Foot Roll Underlayment

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Product Features

40 in. x 189 ft., provides 630 sq. ft. of protection Constant air movement inhibits mold growth Seals out moisture to protect flooring Includes adhesive strip and 4 in. overlap film for linking multiple rolls STC rating of 67 and Impact Sound Transmission Test (IIC) rating of 68, R-Value .40

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