One-Sided Wood Structural Panel Box Header
Typical Detail
This detail shows a one-sided box header built using min. 15/32 performance category wood structural panels on the exterior face of the wall to eliminate conventional headers and increase cavity insulation space in 2D CAD format. Developed by APA – The Engineered Wood Association, this detail is drawn from APA publication Advanced Framing Construction Guide, Form M400 and reflects decades of engineered wood research, testing and field-proven best practices.
This 2D detail is designed for architects, engineers, contractors and building professionals and provides clear, code-compliant guidance.
Available in multiple formats including DWG (AutoCAD), RVT (Revit), and PDF, this detail helps building professionals streamline the design and construction process while ensuring structural integrity and proper installation of engineered wood products.
Published by APA — The Engineered Wood Association.
