DWM is reporting after nearly four years of collaboration, the long-awaited Window Product Category Rule (PCR) has finally been released.

The PCR  was established “to provide a detailed method for developing a business-to-business (B-to-B) Environmental Product Declaration (EPD) to support comparable, informed, and objective sustainable purchasing of windows,” according to the document. The scope of the PCR is “Cradle to Gate with options.”

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