National Custom Hollow Metal

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The hidden cost of progress is that people are often densely packed into confined spaces. This means lots of noise from the vehicles that get people to and from work, lots of noise from the people in the office, and the buzz of all of the electronic devices that they use. We have all become accustomed to the racket that we can tune it out, but should we? Sometimes silence is truly golden, and a quieter and calmer workplace can significantly improve productivity and lower stress levels for all of your employees and clients.

National Custom Hollow Metal has been manufacturing custom stainless steel doors and frames in the USA for over four decades, and we’re proud to offer Sound Transmission Control (STC) doors with an STC 51 rating. STC rating is simply a measurement of how much noise suppression capability that a door offers, and ranges from 20 to 60. An STC rating of 20 can make a significant impact on noise pollution, and doors with a rating of 50 or more can make loud human voices virtually inaudible, even if they are right outside the door. STC doors are perfect for music rehearsal spaces and recording studios, but it doesn’t stop there! Imagine being able to filter out traffic noise from outside, and being able to hold confidential conversations and meetings without worrying about “prying ears” just outside the door!

Our STC doors all feature a proprietary acoustic core with state-of-the-art noise suppression technology, and you’ll notice an immediate reduction in overall workplace noise. The doors can be custom built in any size up to 4’ x 8’, in your choice of stainless or galvanneal 14 or 16 gauge steel. Our STC doors are single or pair entry doors and frames custom built as a complete assembly that’s shipped installation ready.

Like all of our products our STC door assemblies are built to order, and shipped on your schedule. Quik Ship service is standard with every order, and we also offer expedited shipping options when you need them in a hurry. At NCHM, The Difference is Quality and we stand behind everything that we sell with a 100% satisfaction guarantee.

If you have any questions, or would like to receive a quote on STC doors in two hours or less contact us online, or at 800-334-3070.


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