This Stainmaster 13mm Foam Carpet Padding with Moisture Barrier measures 6 feet wide by 45 feet long, providing 270 square feet of coverage — enough for a large bedroom or living area. The moisture barrier helps protect subflooring from spills and humidity, while the 13mm thick high-density foam adds underfoot comfort and extends the life of your carpet. Item is in like-new, in-box condition. Model #BM0039. One roll included.