... m Features:Specification 1leaf structureFir wood skeleton with HDF net infilled,glued together with Carved HDF board,metal interlayer glass ... under high pressure2Door JambFir wood3Casing typeOption4skeletonFir wood for stile & rail 5 Wood speciesFir, Cherry, oak, red oak, sapeli, ash, mahogany, ... .more than ten-year expereince in wood door line & familiar with the requirement about quality required by ...