The door is solid oak
Wooden Interior Doors : The Door Is Solid Oak
Quote from Article entitled Wooden Interior Doors:
Doors of solid wood are the most rarely seen in retail sales. These doors are often constructed by reference to a customer order in specialized enterprises. If such interior doors are available in stores, it is an exclusive product of the European producers and it is distinguished by high technology, quality of fittings and constituent parts. The high cost of these products is related to complexity of woodworking and stabilization of solid wood and it ensures durability.
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