Full-spectrum sound insulation of 38 dB; close the door to immediately have a quiet space.Suitable for: private cinemas, HiFi audio rooms, and piano practice rooms.
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50mm thick carbon-plastic composite soundproof door leaf, graphene thermal expansion smoke-resistant seal strip, servo-driven telescopic carbon-plastic door frame, beveled magnetic soundproof seal strip, flame-retardant soundproof door core, 3D invisible hinges, silent door lock, fixed sound barrier.
Complies with the international E0 environmental standard (zero emissions)
Plain-colored water-based paint
H2200*W900*D120 / 388mm (Door opening dimensions +10mm 、Door panel dimensions )H2165*W842*D50mm
Gross weight≤106Kg (Door Net Weight≤58Kg / Door Frame Net Weight≤20Kg)
STC39dB(±2)
The product's sound insulation rating is based on laboratory test results. Improper installation or sound transmission through the room structure may affect the product's performance.


Acoustic Silence Technology
Our next-generation materials deliver exceptional sound insulation performance, with laboratory tests confirming excellent correlation to computational acoustic models.
The integrated thermal-magnetic damping seals and fully enclosed silent door locks not only increase airborne sound insulation but also effectively minimize operational noise from door closure and mechanical engagement.
Thin-Door Panel Technology
Sound originates from vibrational energy, making the effective control of panel vibration frequency a critical technical parameter for high-performance thin doors.
After testing over ten different technological approaches, Soundbox engineers have established multilayer composite structures—featuring varied materials, thicknesses, and densities bonded with damping interlayers—as the definitive solution for superior sound insulation in thin-door applications.
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