Vetus 150mm x 3000mm GRP Tunnel BP150G30

Vetus 150mm x 3000mm GRP Tunnel BP150G30

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High quality 3m GRP Tunnels tunnel with diameter 150mm - suitable for BOW35 & 55 thrusters. Practical tests demonstrate that acoustic material type ARM can help to reduce bow thruster noise. A coat of ARM compound, or a layer of sheet material around the tunnel can reduce the sound level by about 3 dB(A). Two layers can create a reduction of up to 7 dB(A).