Knauf Insulation B47EV R21K Insulation, 93 in L, 15 in W, R21 R-Value, Fiberglass, Natural Brown

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Knauf EcoBatt insulation doesn't look like any insulation you've ever seen, that's because its natural brown color represents a level of sustainability never before achieved. The color comes from ECOSE technology, a revolutionary, new sustainable binder. Made from rapidly renewable organic materials rather than petroleum-based chemicals commonly used in other insulation products. ECOSE technology reduces binder embodied energy by up to 70% and does not contain phenol, formaldehyde, acrylics or artificial colors used to make traditional fiberglass insulation. EcoBatt insulation combines sand, post-consumer recycled bottle glass and ECOSE technology to create the next-generation of sustainable insulation.