Made of wood plastic composite, this WPC Interior Window Frame has been produced by following latest extrusion technology. This type of frame combines characteristics of wood and plastic and eliminates the necessity of using solid wood or pure plastic. WPC Interior Window Frame has become quite popular for its moisture and water proof design. Moreover, it is fire proof. Its acoustic properties deserve praise. Good thermal insulation level, deformation free quality, crack proof design and low maintenance charge are its key aspects.