... /interior shutter/special shape 1)material:basswood,paulownia,PVC,Aluminum 2)Louver:2",2.5",3",3.5",4.5". 1) Material ... : Carefully selected basswood(imported from Russia) for our interior shutter (basswood shutters)2) Specification:A ... 35mm,51mm,57mm avilable.C) Customerized sizes avilable for our interior shutter.3)Structure: solid basswood shutters with laminated stiles ...