Keeping Classrooms Quiet and Safe
Acoustical Doors That Are Also Bullet Resistant
Students and teachers both thrive in learning spaces free of unwanted noise. Krieger’s acoustical doors enhance learning by ensuring quiet classrooms, and now they add safety to the classroom with an included bullet resistant rating. Giving you sound control and security in one assembly.
Acoustical Rating Bullet Resistance
STC 45 - 48 UL Level 1 and 2
STC 49 - 53 UL Level 3
Need a higher bullet rating? Contact Us
Exceeding the ANSI Standard S12.60-2002
Due to excessive noise in the classroom students are unable to understand 25 to 30 percent of what is said. In responses to this The American National Standards Institute (ANSI) created the ANSI S12.60-2002, Acoustical Performance Criteria, Design Requirements and Guidelines for Schools standard. One of the best ways to ensure the classroom environment is optimized for speech is keeping background noise out. Krieger’s acoustical doors and windows do this by exceeding the standard.

More About Krieger’s Acoustical Doors and Windows
Tornado and Hurricane Doors
Krieger offers doors designed to meet the ICC 500-2014 and FEMA P-361 for tornado and hurricane safe rooms. These unique doors are designed with a three-sided frame, unlike others that may require a four-sided frame to provide the same protection. Plus, they are ADA compliant making them the perfect fit for any safe room.

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Custom Size, Style and Finish
All Krieger doors are manufactured to your specified size, style and finish. 

Krieger can match any finish or create a custom look. Your options are endless. Wood veneer interior acoustical doors may be finish-sanded, primed, sealed with conversion synthetic sealer or completely prefinished prior to shipping. Stainless steel finishes can be embossed, patterned, etched, bead blasted and colored. Bronze, brass, copper, and plastic laminate finishes are also available.

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A Company You Can Trust
Krieger has been a trusted manufacturer of doors and windows for schools and universities since 1936. Here are just a few of the educational facilities which have Krieger doors and windows:
Stanford University
New York University
University of Pittsburg
Georgetown University
Andover High School
Alameda Elementary School
Sunset Elementary School
Dunsmore Elementary School
Granger Middle School
Cedar Creek Middle School
Kauai Intermediate School
University of Wyoming
Harvard University
University of Maryland
Pepperdine University
University of Michigan
Ohio State University
Redmond High School
New Burton Middle School
West Fargo Middle School
Madras High School
Rasco Middle School
Elizabethtown High School
Kaneland High School
Cal Lutheran University
Cornell University
Indiana State University
Glendale College
Riverton High School
Harrison High School
Kapolei High School
Gregory Portland High School
Claremont Graduate School
University of Nebraska
University of Illinois
And over 200 more...
If you have questions please call us at 562-695-0645
Made in the USA