Adopt assembly instruction which is facilitated to maintain.Special high-temperature flame-retardant sound insulation sponge.Slap-up hinge and door handle.Steel Plate of the soundproof canopy is 2mm.Soundproof cotton is 30mm each side.Noise Level: 75~78dB within 1m; 72~74dB within 7m.The muffler installed inside the soundproof canopy.The control can be installed at the front or side to meet your need
