Metal Door Assemblies
Acoustical metal door assemblies with high performance STC (Sound Transmission Class) ratings, designed to reflect or absorb sound waves.

Effectiveness: Our KriegerSonic door line offers STC ratings up to STC-55 in accordance with the most recent ASTM E90-90 standards. Sound performance field testing , however, is the only certain way of ensuring your complete satisfaction. We guarantee that our door assemblies, when correctly installed, with be with 5 rating units of the laboratory STC figure.

Fire Rating: UL fire rated (up to and including 3 hours) and non-labled construction designs available.

Wood Door Assemblies
High performance acoustical wood door assemblies with ratings up to STC-47. Wood doors are an excellent alternative for metal acoustical doors in facilities where wood is the preferred architectural style. Available in a multitude of colors!

Effectiveness: Our KriegerSonic door line offers STC ratings of up to STC-47 in accordance with the most recent ASTM E90-90 standards and are tested at Riverbank Laboratories. Sound performance field testing, however, is the only certain way of ensuring your complete satisfaction. We guarantee that our door assemblies, when correctly installed , will be within 5 rating units of the laboratory STC figure.

Ease of Operation: Cam-lift hinges provide easy opening and closing; they eliminate the need for mechanically operated door bottoms.

Fire Rating: Twenty minute Warnock-Hersey fire labels are available within size and usage limitations.