ECOTONE™ is a world leader in the manufacturing and installation of high performance wooden and steel acoustic doors. With an acoustics range from Rw 35 dB to Rw 55 dB tested for airborne sound as per IS-9901(Part III) – 1981, DIN 52210 part IV – 1984, ISO : 140 ( Part III) – 1995. Single leaf and double-leaf acoustic door. ECOTONE™ also provides Acoustic fire door having 35 to 55 STC rating and 01 Hour 02 Hour fire rating conforming to BS: 476 part 22IS-3614 Part 2 steel and wooden acoustic fire door.