... Strict quality controlli 2013 Eco-friendly Red Oak Door Advantage 1. Formaldehyde content lower than ... Mature technology, exquisite craft.Specification Product nameRed oak door1leaf structureSolid wood skeleton filled with Honeycomb paper ... JambSolid wood3Casing typeOption4skeletonSolid wood 5Wood speciesFir, Cherry, oak, red oak, sapeli, ash, mahogany, teak, walnut6Door openingInward ...