Durable Aluminium Frame: Extruded aluminium (EN AW 6060 alloy - Anticorodal 063) with klevar plaster support mesh to prevent wall-door cracks Insulated Door Panel: 44/54 mm thick honeycomb structure with solid wood frame, high density polystyrene soundproofing, and Class 1 sanded MDF cover with low formaldehyde emissions Adjustable Invisible Hinges: 3D adjustable in height, width, and depth, tested for 200,000 cycles Versatile Magnetic Lock: With key hole, available in versions with latch hole and cylinder hole, options include roller lock, anti-panic, with electric or mechanical strike