Sound-Tech Xpress Acoustical Door Systems


Ceco Door has developed acoustical assemblies that solve noise problems for any facility. High Sound Transmission Class (STC) ratings are typically needed to create sound resistant rooms for the government and military, airports, school band rooms, and to isolate performance halls from exterior noise. Relatively lower STC ratings are provided for less demanding applications, such as hotels or office buildings. ASSA ABLOY offers a complete range of STC rated door assemblies providing a solution for any application. 



  • Up to 4’0” x 8’0” singles and 8’0” x 8’0” pairs
  • 3-hour fire rating by Underwriters Laboratories (UL) and ITS (fire ratings vary with STC rating)
  • Wood doors available in various species, stains and finishes
  • Seals, thresholds, and door bottoms (when required) are shipped with the doors along with the attached STC rating label


  • Some acoustical assemblies can be used with a standard single or double rabbet frame with welded corners
  • Higher acoustical rated assemblies require a custom acoustical frame
  • Frames need to be backfilled with appropriate sound deadening material


  • Locks: Cylindrical, mortise, mortise deadlocks, military
  • Hinges: Standard weight 4-1/2”, 5”, continuous, and cam lift - specific hinges may be required depending on the STC rating
  • Exit Devices: Surface vertical exit devices
  • ElectroLynx™ option available for electrified hardware


  • Sound-Tech Xpress acoustical assemblies are third-party, independently tested under the ASTM E90, ASTM E1332, ASTM E2235, ASTM E413, SDI 128, and HMMA 865 criteria

STC Seal Sets