This series mainly use HDF luxury design ,like with some flowers decoration, or some special architraves .Inside of this door is solid core,no empty,no gaps ,all are full.So the doors will be strong and heavy .It can keep the noise out better .Most of this series will be putted in the villa or the main door for some houses ,hotel .It looks beautiful ,luxury and elegant . Sometimes people choose solid wood door ,like Thailand oak ,Sapele (from Africa),American oak,Rose wood (from Brazil),Teak(from Burma),the solid wood is very heavy ,good sound insulation .But this solid wood higher price ,not cheaper for projects . For villa is good.It will make the villa higher test ,noble and luxury .