STB POWER Line, the power of sound protection

This is the appropriate name for this sound protection door series – with sound protection values up to 60 dB. The STB POWER Line series keeps its promises, as all stipulated sound protection values were measured and acknowledged with the door fully functional fitted in the testing laboratory. Also, the sound protection values of the STB POWER Line speak for themselves even in low frequencies. 125 Hertz this is where you find real POWER, you get to hear very little of what is going on behind this door.