... door frame: Material: veneered MDF/ hardwood/Meranti/Chinese fir/pine Size and shape are customized Features:interior door,wooden ... machines2. High-quality raw materials:hardwood, FIR core,tubularchipboard,honeycomb,laminated fir,MDF board with wood veneer surface. ... structure:Rails/Stiles: Finger joint hardwood or softwoodCore: laminated fir, chipboard, tubular chipboard, wood strip, honeycomb, hollow, ...