Unbranded R-1.3 (Common: 0.5-in x 4-ft x 8-ft; Actual: 0.45-in x 4-ft x 8-ft) Sound Board 1 Unfaced Cellulose Foam Board Insulation with Sound Barrier

Stops sound transfer between living spaces - neighbor to neighbor, room to room, outside to inside, upstairs to downstairs. Earth friendly fiberboard product, made from 97% organic materials including wood fiber. Easy to install by the DIYer or builder. Excellent for new construction or retrofit projects. Use for interior installations only. Product must not be left exposed to the elements. Sound deadening adds value to single and multi-family homes.