IsoBacker putty pad is designed to maintain acoustical ratings in walls and ceilings by sealing the backs of electrical outlets and junction boxes. Each pad is 7.25″ square, easily applies over standard outlet boxes, and will stay resilient (will not harden) over time. IsoBacker is UL classified for both metallic and non-metallic outlet boxes to prevent the spread of smoke, fire, and toxic gases.

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Product Name: IsoBacker

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