2 Lb Mass Loaded Vinyl Soundproofing Barrier More Mass = Less Sound Even MORE privacy -- even LESS distracting sound! 2 LB Mass Loaded Vinyl Barrier has DOUBLE the stopping power as the l LB soundproofing barrier. Use to soundproof a wall, a ceiling, or to soundproof a floor in your home, office, apartment, condo or other facility. Non toxic, safe to soundproof a baby's room. HOW MUCH DO YOU NEED? Walls: Length of room X width = square feet Ceiling: Length X width. Add all together to soundproof entire room. The calculator below will help you. ROLL SIZE  THICKNESS  SQ FT   PRICE  SHIPPING BUY 4.5' x 10' 1/4" 45 $225.00 FREE Please Note: In order to keep prices affordable to you, OUR VALUED CUSTOMER, we are discontinuing our 20 foot lengths until the price of fuel levels. We are sorry for any inconvenience this may cause. We will work with you to find a reasonable solution if your project requires 20 foot lengths. Check out our new offer in sheet sizes! NEW OFFER! SHEET SIZE  THICKNESS  SQ FT   PRICE  SHIPPING BUY 4' x 8' 1/4" 32 $98.00 FREE