Johns Manville Corp. Fiber Glass Insulation Board Diffuser Board

Johns Manville diffuser board is designed for use in the fabrication of HVAC systems, air diffusers and register boxes. The airstream surface features a black glass mat, which provides a smooth interior surface that offers minimal resistance to air flow. JM diffuser board is available plain or with a tough fire-resistant FSK facing laminated to the exterior surface. JM diffuser board provides excellent thermal and acoustical performance. Availability: United States NRC: 0.7 (R4.3) R-value: 4.3 (1") Recycle Content: 16%