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AWPA C20-02
- Structural Lumber - Fire-Retardant Treatment by Pressure Processes
- standard by American Wood Protection Association, 10/01/2003
- Publisher: AWPA
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The AWPA C Standards are no longer under development and have been replaced by AWPA Standards U1 and T1. U1 contains information for end users/specifiers, and T1 contains treating requirements for manufacturers