1.high quality. 2.Pry proof, Drill proof, Sound proof, Dust proof. Features:1) Solid structure2) Airtight3) Environmental friendly4) Material: steel plate5) Filling material: honeycomb core or polyurethane foamDimensions: 1) 860 x 2,050mm2) 900 x 2,050mm3) 960 x 2,050mm4) As per customers" requirementPacking: Polybag and carton. Door