This product is formerly known as WoodProTech 8000TM. This product is intended for use when fire-retardant treated lumber is required by the applicable code. Company Chemical Technologies Holding Corporation No. Sort descending Report Title Report Holder TER 1510-01 Report PDF Sealed PDF TechWood 4400 Wood Protection Treatment Chemical Technologies Holding Corporation DD 1910-02 Report PDF Sealed PDF Techwood 4400 Treated Lumber in Load Bearing, Exterior Wall in Type III Construction Chemical Technologies Holding Corporation DD 1910-03 Report PDF Sealed PDF Techwood 4400 Treated Lumber in Load Bearing, Exterior Walls in Type III Construction Chemical Technologies Holding Corporation DD 1910-04 Report PDF Sealed PDF Techwood 4400 Treated Lumber in Load Bearing, Exterior Walls in Type III Construction Chemical Technologies Holding Corporation DRR 23-0147 Report PDF TechWood 4400 (TW4400) Wood Protection Treatment Approved Alternative to Fire-Retardant-Treated Wood Chemical Technologies Holding Corporation