NICHIHA USA, INC. (8140-2029:0001)
This is a listed siding assembly. Listing 8140-2029:0001. This site cites OSFM BML. Match the model and orientation.
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Nichiha EX Series Field Stone panels have a lapsed wall-siding listing for fiber cement installed over OSB.
The 8140-2029:0001 description names “Field Stone” Brick and Stone panels with smooth and textured surfaces. Their material is fiber cement, 5/8 inch thick, and the required backing is 7/16-inch oriented strand board. The stone wording belongs to the product description; OSFM identifies fiber cement as the panel material.
For a wall proposal, keep the panel and backing thicknesses attached to their respective layers. The handbook directs construction details to Nichiha's installation instructions and product data sheets.
This EX Series entry was in the September 2025 handbook but missing from the BML check on August 25, 2026. The cause of that absence is unknown. Before specifying the panels, seek the exact Field Stone product documentation and confirm its current GOVmotus listing. A matching surface or panel thickness would not settle the status of the historical wall assembly.