Acoustical Capabilities
Noise is one of the single most common complaints at hotels, condos, and other commercial properties. For this reason, STC (Sound Transmission Class) ratings have become a primary consideration when choosing doors for large-scale projects. VT's sound-resistant STC doors are found in every application from airports, healthcare, and hospitality facilities, to government and municipal buildings, as well as educational institutions.

STC RATING |
WHAT CAN BE HEARD THROUGH DOOR |
20-25 |
Very poor - Low speech audible |
25-30 |
Poor - Normal speech understood easily and distinctly |
30-35 |
Fair - Loud speech understood fairly well |
35-40 |
Good - Loud speech heard but hardly intelligible, this is the onset of acoustic “privacy” |
40-50 |
Very Good - Loud speech heard faintly, 90% of a typical group sample not annoyed |
50-52 |
Excellent - Loud sounds heard faintly or not at all, 99% of a typical group sample not annoyed |
VT offers a wide variety of acoustical doors including: