Solid wood interior Doors
Materials of interior doors construction : Solid Wood Interior Doors
Quote from Article entitled Materials of interior doors construction:
A door of solid wood is a more expensive choice, but the numerous benefits completely pay back the costs. Depending on the species of wood, price of a product will fluctuate, low-priced products are made of pine and high-class species of wood are ash, oak.
The full version of the article can be found here.