Our solid wooden door is mortise and tennon structure.
All stile and rail components are engineered for durability and stability.  The composite and edge-glued core construction creates a system that is more stable than solid wood.  

To enhance stability even further, the core of our wooden doors contain double 0.6mm natural wood veneer and MDF.  For our engineered stiles and rails, each stile features a solid wood edge.  The engineered stiles and rails are stronger then single, solid wood pieces, reducing the possibility of the door warping or splitting.