STC-Rated Doors & Windows
Effective acoustic door and acoustic window systems are critical to preventing noise transfer into or out of enclosed environments. O’Neill Engineered Systems represents IAC Acoustics, a leading supplier of high-performance steel STC-Rated doors and windows.
What are STC Acoustical Ratings?
The Sound Transmission Class (STC) is a single-number decibel rating reflecting the sound transmission loss properties of a partition. A higher STC rating indicates that the door or window stops more noise from passing through. Every facility requires specific noise reduction levels; O’Neill helps you identify the precise STC acoustical ratings required for your application.
Available STC Performance Levels
To meet diverse acoustic demands, our structural systems are available in a wide range of certified ratings.
- STC-Rated Doors – 51, 53, 55, 61, 64
- STC-Rated Windows – 35, 39, 53, 57, 58, 59
Technical Features & Specifications
Our noise-control systems are engineered with advanced mechanical features to guarantee certified performance, design flexibility, and long-term durability.
STC-Rated Door Features
- Custom Scaling – No size limitations; all doors are made to order to fit your precise footprint.
- Advanced Seals – Self-aligning magnetic seals assure long life and high field performance under constant use.
- Cam-Lift Hinges – Specialized hinges lower and seal the sound control door to the floor, eliminating high-maintenance automatic drop seals.
- Split Frames – Unique frame design eliminates in-field grouting to achieve specified acoustic performance.
- Safety Ratings – Available with UL fire ratings (20 min, 45 min, 60 min, 90 min, and 3 hours) and blast-resistance ratings up to 100 PSF.
- Aesthetics & Vision – Wood veneered cladding available on door leaves; multiple-sized options for double-glazed windows integrated directly into the doors.
- Ready for Assembly – Pre-hung and fully factory assembled.
STC-Rated Window Features
- Rugged Construction – Built with heavy-gauge steel construction and fully factory assembled (including glass and glazing).
- Design Flexibility – Available in standard and custom sizes or configurations to fit any wall thickness.
- STC Rated Glass Options – Available with bullet-resistant glass, one-hour UL fire-rated glass, and angled glass panes to optimize visibility and acoustics.
- Acoustic Liner – Includes a pre-finished, sound-absorbing liner.
- Structural Integration – Seamlessly integrates with all construction types, including drywall, studs, concrete, and masonry.
Benefits of STC-Rated Windows & Doors
Choosing an engineered acoustic system from O’Neill Engineered Systems ensures optimal construction, seamless operation, and long-term cost savings.
- Turnkey Engineered Systems – Each complete door system includes the leaf, split-frame, seals, hinges, and latching hardware engineered to work perfectly as a singular unit.
- Reduced Installation Costs – Every STC-Rated door and window unit is factory assembled and functionally tested for alignment, fit, and ease of operation prior to shipment. This virtually eliminates in-field construction errors that compromise performance.
- Time-Saving Installation – Split frames streamline the installation process, reducing labor time on-site.
- Minimized Construction Damage – Because the door assembly is installed during the finish phase of construction, the risk of site damage from other trades is minimized.
- ADA Compliance – A specialized no-sill condition facilitates smooth wheelchair access, ensuring all entryways conform to the Americans with Disabilities Act (ADA).
Applications for STC Rated Doors & Windows
Our high-performance acoustic solutions are widely utilized across industrial, commercial, and media applications to isolate noise and protect acoustic integrity.
- Manufacturing & Industrial – Engine test cells, dynamometer rooms, mechanical rooms, industrial facilities, and general building systems.
- Product Testing & Development – Acoustic product testing rooms, research facilities, and laboratories.
- Radio, TV, & Post Production – Multimedia studios, broadcast suites, music practice rooms, and audiometric test rooms.
- Institutional & Commercial – Schools, places of worship, healthcare facilities, and security or law enforcement soundproofing.
Related Applications
Learn more about noise control applications that O’Neill Engineered Systems offers..
Manufacturing & Industrial Noise Control Products
Noise control problems in industrial & manufacturing sectors are solved with equipment noise isolation via machine noise enclosures, modular in-plant offices or a combination of both.
Schools & Places of Worship
Noise control product design and installation help improve student performance within schools and provide quieter, more peaceful environments for worship spaces.
Product Testing & Development
Acoustically-treated enclosures designed to provide consistent testing environments for precise measurements while providing sound isolation from external environments.
Radio, TV & Post Production Noise Control
Studio soundproofing solutions allow for crisp, clear editing and production in recording studios, control rooms, and editing rooms for radio, TV, music & movie environments.