STC Rated Doors

STC Rated Doors

Industrial STC Rated Doors

Industrial STC Rated Doors

eNoise Control offers high STC Rated Doors for a wide range of applications.  Our Sound Rated Doors have STC (Sound Transmission Class) ratings from STC 26 to STC 70.  All STC Rated Door designs are testing in an NVLAP accredited Aero-Acoustic Laboratory.  eNoise Control delivers a full factory assembled door unit including leaf, time-saving split frame, seals, latching hardware, and glazing.

Industrial clients call us for their engine test cells, anechoic chambers, quiet rooms, and product test booths for high STC Rated doors.  If you require STC 50 or higher, we can offer a solution for you.  Call us today to discuss your application or read our article about how to choose sound control doors.


Understanding STC Ratings

Sound Transmission Class is an integer rating of how well a building partition reduces airborne sound. The below chart gives some examples of what can still be heard through a partition at various STC ratings.

STC What can be heard
25 Normal speech can be understood quite easily and distinctly through the wall
30 Loud speech can be understood fairly well, normal speech heard but not understood
35 Loud speech audible but not intelligible
40 The onset of “privacy”
42 Loud speech audible as a murmur
45 Loud speech not audible; 90% of the statistical population is not annoyed
50 Very loud sounds such as musical instruments or a stereo can be faintly heard; 99% of the population is not annoyed.
60+ Superior soundproofing; most sounds inaudible

Note: It is important to consider STC while selecting sound reducing partitions, but it cannot be solely relied upon if you are trying to reduce the noise of lower frequencies (such as HVAC system hum and bass drums). These lower frequencies are not applicable to the STC rating scale. If you are looking to reduce noise from these sources, contact us to speak with an acoustical consultant that can find the perfect solution for you.


STC Rated Door Features

  • Full factory assembly and functional testing
  • Self-aligning magnetic seals provide durability and high field STC rating under adverse conditions
  • Cam-lift hinges and ADA compliance
  • NVLAP Laboratory Testing of all designs
    High STC Acoustic Sound Rated Doors

    High STC Acoustic Sound Rated Doors

  • Time saving split frame
  • Quick ship stock program for immediate shipment; STC 51
  • Wood Veneer finish – over 100 species


Acoustic Door Ratings

  • 20, 60, 90 min and 3-hr Fire – 3 PSI Blast – STC 26 to 70
  • RF shielding to NSA 65-6 (100 dB at 10 GHz)


Applications for STC Rated Doors

Industrial Sound Rated Doors

Industrial Sound Rated Doors

Learn more about how structure and door seals affect STC rated doors.


STC Door Installation

STC rated doors should always be installed by a professional. There are quite a few complicated steps in the installation process that are critical to the performance of the door. On-site installation can be pretty easy if the door has been assembled prior to delivery by the factory. If the door arrives without being fully assembled, it can take up to 7 hours to complete the installation. Ideally, you want the door to be factory assembled (to ensure no errors occur while constructing the door onsite) and to save time in the installation process. When delivered fully assembled, the installation should take around 90 minutes.

How to Buy

When it comes to buying the best STC Rated Doors, look no further than eNoise Control.  We have a team of highly educated acoustical consultants to assist you in finding the perfect noise reducing partition for your individual needs. Our doors combine all of the must-have features in one highly effective and easy to install package. This includes:

  • The door is factory assembled, pre-hung, and adjusted in the plant
  • In factory adjustments ensure the highest acoustical performance
  • Magnetic seals, foam seal, and specified hardware all installed at the factory
  • Mortised, adjustable compression seal is installed at the factory
  • A two-piece split frame is sized to fit existing rough opening
  • By reducing installation time by over 75%, we reduce your installation costs


To get started, give us a call or send us an email to

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