“What’s being referred to here are ‘hollow core doors’ [which] have a thin wooden exterior ... one should opt for ‘solid core ...
French doors are usually used as exterior doors since they give ... and exterior doors for years. They can be a solid alternative for wood doors, as they can be more economical options.
Read about different French door types in our guide, which breaks down interior and exterior French door sizes ... greater strength-to-weight ratio than wood.