March 28, 2016
(GRATZ, PA) – In a recent acoustical performance test, MI Windows and Doors’ 1675 casement window achieved an STC rating of 28 and an OITC rating of 33. The results were achieved with a standard 3/4” dual-pane insulated glass package, utilizing ¾” DSB for the exterior glaze, and 3/16” glass for the interior. Traditionally, triple-pane or laminated glass is needed to obtain the higher rating, making MI’s offering more cost-accessible for customers.
The STC rating of a window determines how much sound is transmitted through the window and into the home; a higher rating means less noise will transfer into the home compared to a lower rating. Dual-pane windows typically obtain STC ratings between 25-27.
OITC measure noise in a lower frequency than STC, and was developed specifically to gauge street sounds, such as car horns, sirens, construction equipment, and airplanes. Similarly to STC ratings, a higher OITC rating signifies better performance. Typical windows achieve an OITC rating between 23-26.
“Acoustics and sound control is becoming a big issue in the window and door industry, and we’re excited to be reaching these benchmarks with our products,” stated Josh Williard, product manager at MI. “It’s refreshing to see that our continued product developments are enabling us to provide our customers with the sound-control solutions they’re looking for.”
Founded in 1947, MI Windows and Doors is one of the nation's largest suppliers of energy-efficient vinyl and aluminum windows and doors. With plants in Pennsylvania, Texas and Arizona, MI offers a broad spectrum of windows and doors backed by exemplary customer service. The company's commitment to quality and service are exemplified by the people that represent it nationwide. For more information, visit www.miwd.com.