Krieger’s acoustical doors are available in single or paired hinged door assemblies. All assemblies can be configured with manual or power-operated controls, and with or without vision lites, side lites, and transoms.

We offer standard frame designs as well as specially engineered frame profiles to complement any wall construction or architectural style. You can also add decorative mullions and moldings to match the design of your project.


Krieger doors can be crafted to ensure visual compatibility with architectural features on historical buildings in compliance with National Historic Preservation Act guidelines.

Tested and certified acoustical glass or fire-rated glass and glazing materials are available for acoustical door assemblies with vision lites, side lites, or transoms.

Adjustable blinds in between the panes of glass are available to control the amount of light and provide added privacy and security.

Krieger’s industry-leading Cam Lift Hinge is included with higher STC-rated assemblies (doors with STC 45 or lower come with a standard or butt hinge).

The unique design of the Cam Lift Hinge offers enhanced radial strength, longer lasting performance, and easy maintenance.

Cam Lift Hinges come in standard or electrified models.

More Information on Cam Lift Hinges

Krieger’s acoustical door assemblies meet the Americans with Disabilities Act (ADA) threshold requirements of ½" without portable ramps, allowing them to be used in any location.

In addition, lab testing of our Cam Lift Hinge shows it to be fully compliant with ADA requirements for the maximum force required to pull the door open (less than 5 pounds on door leaves under 500 pounds), which means it can be used in any location, even for heavy doors.

Krieger’s SCIF compliant acoustical door assemblies are custom-engineered to meet the regulations of the National Counterintelligence and Security Center.

View SCIF Compliant Pre-Engineered Models


Our 705 SCIF Door and Lock Package is an all-in-one solution that is 100% ICD 705 certified and meets SCIF Sound Group 3 and 4 standards.

The complete package includes the door, frame, hinges, closer, threshold, door bottom, seal system, and a Sargent & Greenleaf or Lockmasters locking device—and is shipped as complete unit with the lock installed. View Full Package Details

Krieger’s sound control windows are available up to STC 56. We offer standard frame designs as well as specially engineered frame profiles to complement any wall construction or architectural style.


Krieger acoustical windows can be crafted to ensure visual compatibility with architectural features on historical buildings in compliance with National Historic Preservation Act guidelines.


A sample of Krieger’s acoustical doors and windows. View Pre-Engineered Models

Krieger’s Acoustical Window Wall assembly is fully customizable and changeable, making it an ideal choice for a wide range of interior and exterior applications including industrial plants, office buildings, retail spaces, meeting rooms, and schools.

Ours is the highest tested acoustical assembly of its kind—up to STC 52. Lighter weight construction makes it easier to install. It’s also eligible for LEED (Leadership in Energy and Environment Design) credits for day light as well as acoustical standards.

More Information on Acoustical Window Wall

Tested and certified acoustical glass or fire-rated glass and glazing materials are available for acoustical door assemblies with vision lites, side lites, or transoms.