For interior doors, solid wood frame means the main frame structure is made from real wood materials.

Common solid wood frame options include:

• Solid Wood
• Finger Joint Pine
• Laminated Solid Wood

Although these materials are processed or joined, they are still made from real wood.

Materials that are not considered solid wood frames include:

• MDF Frame
• Particle Board Frame
• HDF Frame
• Plywood Frame

These are classified as engineered wood frames.

When a project specification requires a solid wood frame, buyers should confirm the actual frame material to ensure it meets the requirement.