Acoustical doors
Acoustical Doors.
Engineered for Performance.
Memtech Acoustics delivers premium soundproof door systems that block noise, maintain speech privacy, and meet the most demanding acoustic and building code requirements.
The Weakest Link in Soundproofing
Not even the most advanced wall systems can deliver true sound control if the door allows sound to escape. Doors often become acoustic weak points (leaky, underperforming, and overlooked) degrading the acoustic performance of adjoining walls and structures.
Memtech Acoustics supplies custom engineered soundproof doors, crafted and tested to preserve acoustic integrity of rooms and enclosures. These high-performance systems provide precision seals at critical points, ensuring that the overall solution performs as engineered.
Memtech Acoustics supplies custom engineered soundproof doors, crafted and tested to preserve acoustic integrity of rooms and enclosures. These high-performance systems provide precision seals at critical points, ensuring that the overall solution performs as engineered.
They provide:
- STC ratings from 35 to 55+ to match the performance of adjacent wall assemblies (lab-tested to ASTM E90 sound transmission standards).
- Complete systems including door leaf, frame, seals, and thresholds for airtight performance.
- Architectural finish options to complement interior design without compromising performance.
- Single and double door configurations to suit conference rooms, mechanical spaces, and secure facilities.
Memtech Acoustics can help your door(s) become a seamless extension of your noise control system.
System Design Features
High‑Mass Core Construction
Internal dense cores with damping layers deliver superior STC performance.
Factory-Installed Seals & Hardware
Doors come fully assembled with acoustic perimeter seals, bottom gasketing, and glazing options.
Concealed Functional Elements
Patented concealed hinges and sleek profiles maintain design integrity.
Adaptive Seal Systems
Adjustable bottom seals and magnetic gasketing compress to meet floor unevenness and air leakage challenges.
Fire-Rated Acoustic Capability
Tested to rigorous fire standards (including UL 10B/10C positive pressure).
Rapid Turnaround & Modular Design
Select door systems are available on expedited lead times with pre-configured split frames and standard lock prep.
QuietSwing® Architectural Doors
Acoustical DOORS
QuietSwing® Alexis™
The Alexis™ is an architectural-grade swing door built around a patented concealed hinge system. No exposed hardware is visible from either face of the door, preserving the design integrity of high-end interior spaces.
At 1-3/4" door thickness, the Alexis™ is engineered to work with standard building hardware and arrives completely factory-assembled, including all seals, hardware, and a pre-installed threshold.
Its split-frame assembly allows installation into existing openings without requiring a full frame replacement, making it equally well-suited for new construction and retrofits. ADA compliant with a single continuous compression seal and minimal opening force.
At 1-3/4" door thickness, the Alexis™ is engineered to work with standard building hardware and arrives completely factory-assembled, including all seals, hardware, and a pre-installed threshold.
Its split-frame assembly allows installation into existing openings without requiring a full frame replacement, making it equally well-suited for new construction and retrofits. ADA compliant with a single continuous compression seal and minimal opening force.
- Typically STC 43–57, depending on thickness and seal configuration
- Heavy-gauge steel with internal acoustic cores engineered to block airborne sound transmission while keeping overall weight manageable
- Available in single-swing or paired double-leaf designs; personnel-size doors up to 4′ × 10′ and oversized doors for large-scale openings such as stage access or industrial test cells
- Precision compression seals, drop bottoms, and acoustically rated frames that eliminate flanking paths
Best For: Corporate offices, hospitality spaces, executive suites, cultural venues, and any environment where architectural aesthetics and acoustic performance must coexist without compromise.
Acoustical DOORS
QuietFold® Bi-Parting Acoustic Door
The QuietFold® is engineered for large openings that must close fully for acoustic isolation but need to open wide for access, traffic flow, or flexible space reconfiguration.
Multi-panel folding leaves (available in four or six-hinge configurations) stack to one or both sides of the opening, with a continuous magnetic compression seal system providing uniform acoustic closure across the full span.
Memtech Acoustics specifies the QuietFold® in STC 50, 52, and 54 configurations, with panel thickness and construction selected to match the project's performance target. A multi-point locking system distributed across the sliding track provides enhanced security alongside acoustic performance.
Multi-panel folding leaves (available in four or six-hinge configurations) stack to one or both sides of the opening, with a continuous magnetic compression seal system providing uniform acoustic closure across the full span.
Memtech Acoustics specifies the QuietFold® in STC 50, 52, and 54 configurations, with panel thickness and construction selected to match the project's performance target. A multi-point locking system distributed across the sliding track provides enhanced security alongside acoustic performance.
- STC 50, 52, and 54 performance levels, tested to ASTM E90
- Covers openings from 12 to 40 feet
- Four or six-hinge leaf configurations; folds to one or both sides
- 2-1/2" panels (STC 50/52) or 3-1/2" panels (STC 54)
- Multi-point locking system across sliding track
- Dual magnetic seals; 14-gauge galvanneal steel with non-combustible acoustic fill
- Standard or custom glazing available
Best For: Convention centers, multipurpose halls, concert venues, churches, schools, auditoriums, production spaces, and government secure areas requiring large-span acoustic separation with flexible access.
Acoustical DOORS
QuietPivot™ Acoustic Door
The QuietPivot™ uses a low-friction center pivot mechanism in place of traditional hinges, offering a swing geometry suited to environments where standard hinge-side clearance is limited or where the architectural configuration doesn't accommodate a conventional swing door.
Rated at STC 45, each QuietPivot™ features solid 14-gauge galvanneal steel construction, a non-combustible acoustic fill, and a dual magnetic seal system for consistent perimeter closure.
Memtech Acoustics specifies the QuietPivot™ as a cost-effective alternative to operable partitions where full partition flexibility isn't required but reliable acoustic separation is.
Rated at STC 45, each QuietPivot™ features solid 14-gauge galvanneal steel construction, a non-combustible acoustic fill, and a dual magnetic seal system for consistent perimeter closure.
Memtech Acoustics specifies the QuietPivot™ as a cost-effective alternative to operable partitions where full partition flexibility isn't required but reliable acoustic separation is.
- STC 45, tested to ASTM E90
- Center pivot mechanism; no hinge-side swing clearance required
- 14-gauge galvanneal A-60 steel with non-combustible acoustic fill
- Dual magnetic seal system for airtight perimeter closure
- Factory-assembled; hardware, seals, and glazing pre-installed
- Available in single and double-leaf configurations
Best For: Theaters, performing arts centers, broadcast studios, university facilities, museums, and spaces where flexible acoustic separation is needed but full operable partition systems aren't practical or necessary.
Acoustical DOORS
QuietSlide® Horizontal Sliding Door
The QuietSlide® delivers acoustic-rated performance in a power-operated horizontal sliding format for when swing or fold geometry isn't viable due to space constraints, traffic patterns, or operational requirements.
Available in single-slide or bi-parting configurations, each door is custom-fabricated from heavy-duty galvanized A-60 galvanneal steel with internal stiffeners and a non-combustible acoustic fill.
Memtech Acoustics specifies the QuietSlide® for large industrial and infrastructure openings where powered operation, heavy-duty construction, and reliable acoustic performance must all be met in a single assembly. The motor and belt system arrive factory pre-assembled and tested, with the full unit crated for efficient transport and installation.
Available in single-slide or bi-parting configurations, each door is custom-fabricated from heavy-duty galvanized A-60 galvanneal steel with internal stiffeners and a non-combustible acoustic fill.
Memtech Acoustics specifies the QuietSlide® for large industrial and infrastructure openings where powered operation, heavy-duty construction, and reliable acoustic performance must all be met in a single assembly. The motor and belt system arrive factory pre-assembled and tested, with the full unit crated for efficient transport and installation.
- Motorized or manual horizontal sliding; single or bi-parting configurations
- Custom-fabricated; solid 14-gauge galvanneal steel with internal stiffeners
- Non-combustible mineral wool or fiberglass acoustic fill
- Ships crated for efficient transport and installation
- Standard or custom glazing; variety of hardware options available
Best For: Large industrial openings, stage access doors, test cell entries, airport facilities, and any application where swing or fold clearance is unavailable and powered operation is preferred or required.
Acoustical DOORS
QuietSwing® Industrial Heavy-Duty Door
Where standard architectural doors reach their limits, the QuietSwing® Industrial is what Memtech Acoustics specifies. Built for continuous-duty operation in demanding acoustic and physical environments, these heavy-duty swing doors feature reinforced construction, high-mass acoustic cores, and multi-layer gasketing designed to maintain performance under sustained vibration, airflow pressure, and heavy operational cycling.
Custom sizing, blast resistance options, and high-cycle hardware are available for mission-critical applications.
Custom sizing, blast resistance options, and high-cycle hardware are available for mission-critical applications.
- STC 50+, depending on mass, construction, and seal configuration
- Heavy-gauge steel with internal acoustic cores engineered to block airborne sound transmission while keeping overall weight manageable
- Available in single-swing or paired double-leaf designs; personnel-size doors up to 4′ × 10′ and oversized doors for large-scale openings such as stage access or industrial test cells
- Precision compression seals, drop bottoms, and acoustically rated frames that eliminate flanking paths
Best For: Engine and turbine test cells, power generation facilities, anechoic chambers, acoustic labs, industrial manufacturing plants, and mission-critical environments where doors must perform reliably under demanding physical and acoustic loads.
Acoustical DOORS
QuietGuard™ SCIF Doors
The QuietGuard™ is the door Memtech Acoustics specifies when a project must satisfy the acoustic requirements of ICD/ICS 705, the governing standard for Sensitive Compartmented Information Facilities.
Designed to meet Sound Group 3 and Sound Group 4 performance classifications, these doors go beyond standard acoustic ratings to address the speech privacy thresholds mandated for classified government and defense environments.
Construction combines high-mass steel skins, multi-layer acoustic cores, and precision perimeter sealing systems engineered to eliminate the flanking paths that would otherwise compromise a facility's acoustic and security integrity. Available in configurations suited to both new SCIF construction and renovation of existing secure spaces.
Designed to meet Sound Group 3 and Sound Group 4 performance classifications, these doors go beyond standard acoustic ratings to address the speech privacy thresholds mandated for classified government and defense environments.
Construction combines high-mass steel skins, multi-layer acoustic cores, and precision perimeter sealing systems engineered to eliminate the flanking paths that would otherwise compromise a facility's acoustic and security integrity. Available in configurations suited to both new SCIF construction and renovation of existing secure spaces.
- High-mass steel construction with multi-layer acoustic core
- Precision perimeter sealing to eliminate flanking paths in classified environments
- Suitable for new construction and renovation of existing secure facilities
- Compatible with applicable physical security hardware requirements
- Available for U.S. government, defense, and intelligence community projects
Best For: SCIFs, Sensitive Compartmented Information Facilities, U.S. military installations, intelligence community facilities, federal government secure spaces, and any project governed by ICD 705 acoustic compliance requirements.
Acoustical DOORS
Accordion Acoustical Doors
For spaces that demand flexibility, such as large openings that must close securely for acoustic isolation, accordion-style acoustical doors are an effective solution.
- Typically STC mid-30s to mid-40s, depending on configuration and sealing system
- Multi-panel systems with acoustical cores, precision hinges, and continuous magnetic compression seals to ensure uniform closure
- Panels fold or slide to one or both sides for quick reconfiguration of space; oversized options available for any commercial or industrial setting
Applications:
- Convention centers and multipurpose rooms where partitions must provide both flexibility and acoustic control
- Studios, rehearsal rooms, and auditoriums requiring occasional large openings without compromising privacy
- Government secure areas and SCIFs where both access and classified speech privacy are mandatory
- Industrial test facilities requiring large-scale access combined with noise containment
Acoustical DOORS
Specialty Industrial Doors
For mission-critical environments where standard assemblies aren’t enough, Memtech engineers custom industrial door systems built to meet the highest acoustic, environmental, and structural demands.
- Custom-rated, typically STC 50+, depending on mass, construction, and seal design.
- Heavy-duty acoustic cores reinforced for durability under demanding operational loads. Options for blast resistance, oversized widths/heights, and continuous use cycles.
- Multi-layer gasketing, high-mass cores, and resilient seals designed to withstand vibration, airflow pressure, and heavy traffic.
Applications:
- Test cells for engines, turbines, and machinery.
- Power generation facilities where high sound pressure levels must be controlled.
- Industrial plants requiring worker protection from hazardous noise exposure.
- Anechoic chambers and acoustic labs requiring maximum noise isolation.
Product Design Highlights
Every acoustical door system we provide is engineered, tested, and rated to deliver reliable sound isolation.
STC Ratings
Doors are tested in accordance with ASTM E90 for sound transmission loss, with options ranging from STC 41 for standard interior wood systems to STC 57+ for heavy-duty metal and specialty assemblies.
Complete Door Assemblies
All doors are supplied with acoustically rated frames, perimeter seals, and drop bottoms or thresholds to ensure airtight closure and consistent results.
Construction Integrity
Available in steel, wood, or composite cores designed for high-mass, low-resonance performance while maintaining durability and ease of operation.
Size & Configuration Flexibility
Standard personnel sizes up to 4′ × 10′ single and 8′ × 10′ pairs; oversized and custom-engineered assemblies available for industrial, stage, and large-access openings.
Fire & Safety Compliance
Acoustical doors can be specified with fire ratings up to Class A while maintaining acoustic performance, meeting both safety and code requirements.
Sealing Systems
Precision magnetic compression seals, automatic drop bottoms, and multi-point gasketing provide uniform contact to block sound leaks and flanking paths.
Environmental & Durability Standards
Built for long-term performance under heavy use, with options for low-VOC finishes and systems that integrate into sustainable building designs.
Common Applications
Acoustical doors are essential wherever privacy, compliance, and noise isolation matter.
- Healthcare Facilities
Protect patient confidentiality and comply with HIPAA speech privacy standards in exam rooms, consultation offices, and nurse stations. - Corporate & Education
Ensure speech privacy for conference rooms, classrooms, lecture halls, and executive offices, minimizing disruptive noise transfer between adjacent spaces. - Government & Security
Support classified discussions, SCIFs (Sensitive Compartmented Information Facilities), and command centers with doors that meet both acoustic and security requirements. - Industrial & Manufacturing
Reduce hazardous noise exposure in test cells, power generation facilities, and mechanical rooms, ensuring safer work environments and OSHA compliance. - Performing Arts & Media
Deliver acoustic integrity in recording studios, broadcast rooms, theaters, and performance halls, where even slight sound leaks can compromise audio quality. - Hospitality & Public Venues
Enhance guest comfort and event quality by isolating conference centers, meeting rooms, and convention halls from external noise sources.
Applications
Industrial & Manufacturing
Isolating saw rooms or loud machinery
Warehousing & Fulfillment
Containing sound from conveyors or fillers
Testing Labs
Creating temporary sound isolation zones
Commercial Offices
Sealing cracks and gaps
Government & Public Sector
Segmenting loud zones from admin or right-use areas
Recording Studios
Improving sound quality in specialty environments
Technical Data &
Product Literature
Can't find what you need?
Contact Us or call us at (248) 289-1123 during our normal business hours (Mon-Fri, 8:00AM to 5:00PM ET) to speak directly with a noise control expert.
QuietSwing®
QuietSwing® STC 45 Door Details Sheet
QuietSwing® STC 46 Door Details Sheet
QuietSwing® STC 50 Door Details Sheet
QuietSwing® STC 51 Door Details Sheet
QuietSwing® STC 52 Door Details Sheet
QuietSwing® STC 54 Door Details Sheet
QuietSwing® STC 56 Door Details Sheet
QuietPivot®
QuietPivot® Door Drawings
QuietFold®
QuietFold® Bi-Parting Door Drawings
Support Beyond the Product
Installation assistance available for Michigan and Great Lakes region clients
Engineering consultation to ensure proper material selection
Custom sizing and integration with other Memtech acoustic systems
Replacement panels and parts available for future reconfiguration
Frequently Asked Questions (FAQs)
Why is the door often the weakest point in a soundproofed room or enclosure?
A wall assembly is only as effective as its least-performing component. Gaps at the perimeter, insufficient door mass, and inadequate sealing at the threshold are the most common failure points. Acoustical doors are engineered as complete systems (door leaf, frame, perimeter seals, and threshold) to eliminate these flanking paths and match the performance of the adjacent wall assembly.
What STC ratings are available for acoustical doors, and how do I know which one I need?
Memtech Acoustics supplies acoustical doors ranging from STC 35 to STC 57+, tested to ASTM E90. As a general benchmark: STC 41–45 is appropriate for conference rooms and classrooms requiring good speech privacy; STC 45–50 suits recording studios, broadcast rooms, and healthcare spaces with stringent privacy requirements; STC 50–57+ is specified for industrial test cells, power generation facilities, SCIFs, and environments with high sound pressure levels. The right target depends on the source noise level, the required noise reduction, and what the adjacent wall assembly is rated to achieve.
What types of acoustical doors does Memtech supply?
QuietSwing® Architectural — Single and double-leaf swing doors in STC 45–57, fully factory-assembled with dual magnetic seals, cam-lift hinges, and non-combustible mineral wool or fiberglass fill; available in nine acoustic ratings.
QuietSwing® Alexis™ — Patented concealed-hinge swing door at 1-3/4" thickness; designed to integrate with standard building hardware and existing openings via split-frame assembly; ADA compliant.
QuietSwing® EZ Open™ — Compression/magnetic dual-seal system that reduces opening force to under 3 lbs while maintaining STC 45–51 performance; retrofittable onto existing Noise Barriers doors.
QuietPivot™ — Center-pivot acoustic door with dual magnetic seal system; STC 45; designed for theaters, performing arts centers, studios, and high-traffic spaces where swing clearance is limited.
QuietFold® Bi-Parting — Multi-panel folding door system in STC 50, 52, and 54; four or six-hinge leaves for openings from 12 to 40 feet; suited for convention centers, auditoriums, and large-access applications.
QuietSlide® Horizontal Sliding — Motorized or manual horizontal sliding door in single or bi-parting configurations; heavy-duty galvanized steel construction; designed for large industrial openings, stages, and test facilities.
QuietSwing® Industrial Heavy-Duty — Rugged swing doors engineered for continuous-duty industrial environments including test cells, power plants, and manufacturing facilities requiring sustained acoustic performance under demanding operational loads.
QuietSwing® Alexis™ — Patented concealed-hinge swing door at 1-3/4" thickness; designed to integrate with standard building hardware and existing openings via split-frame assembly; ADA compliant.
QuietSwing® EZ Open™ — Compression/magnetic dual-seal system that reduces opening force to under 3 lbs while maintaining STC 45–51 performance; retrofittable onto existing Noise Barriers doors.
QuietPivot™ — Center-pivot acoustic door with dual magnetic seal system; STC 45; designed for theaters, performing arts centers, studios, and high-traffic spaces where swing clearance is limited.
QuietFold® Bi-Parting — Multi-panel folding door system in STC 50, 52, and 54; four or six-hinge leaves for openings from 12 to 40 feet; suited for convention centers, auditoriums, and large-access applications.
QuietSlide® Horizontal Sliding — Motorized or manual horizontal sliding door in single or bi-parting configurations; heavy-duty galvanized steel construction; designed for large industrial openings, stages, and test facilities.
QuietSwing® Industrial Heavy-Duty — Rugged swing doors engineered for continuous-duty industrial environments including test cells, power plants, and manufacturing facilities requiring sustained acoustic performance under demanding operational loads.
What is the QuietSwing® Alexis™ door, and when should I specify it?
The Alexis™ is an architectural-grade swing door featuring a patented concealed hinge design. No exposed hardware is visible from either side of the door, preserving the clean aesthetic of high-end interiors. At 1-3/4" door thickness, it works with standard building hardware and arrives factory-assembled with all hardware, seals, and a pre-installed threshold. The split-frame design allows it to be installed into existing openings, making it well-suited for commercial office retrofits, corporate headquarters, hospitality spaces, and any environment where aesthetics and acoustic performance need to coexist.
What is the difference between magnetic seals and compression seals on acoustical doors?
Both seal systems serve the same function to create an airtight perimeter closure when the door is closed, but they work differently. Magnetic seals attract and compress automatically as the door closes, requiring no manual adjustment and providing consistent contact around the full door perimeter. Compression seals use mechanical force to create the seal.
The QuietSwing® EZ Open™ system combines both: a custom compression seal working in tandem with the magnetic seal to reduce the force needed to open the door to under 3 lbs, which is particularly valuable in high-traffic or ADA-sensitive environments.
The QuietSwing® EZ Open™ system combines both: a custom compression seal working in tandem with the magnetic seal to reduce the force needed to open the door to under 3 lbs, which is particularly valuable in high-traffic or ADA-sensitive environments.
Can acoustical doors be specified with fire ratings?
Yes. Acoustical doors can be specified with fire ratings up to Class A while maintaining acoustic performance, meeting both safety and building code requirements. Fire-rated configurations are tested to UL 10B/10C positive pressure standards. This is commonly required in healthcare, government, industrial, and educational occupancies where both acoustic separation and fire-rated construction are mandated by code.
What door system is appropriate for a SCIF or secure government facility?
SCIFs (Sensitive Compartmented Information Facilities) require doors that meet ICD 705 acoustic standards, which specify Sound Group 3 or Sound Group 4 performance depending on the facility classification.
Do acoustical doors come factory pre-assembled, or are they field-assembled on site?
Most door systems arrive at the job site completely factory-assembled, including all hardware, seals, glazing, and threshold. This significantly reduces installation time, eliminates field fit-up variables that can compromise acoustic performance, and ensures the door performs as tested. The QuietSlide® power-sliding system ships with the motor and belt system pre-assembled and crated for transport.
Can Memtech help me specify the right acoustical door for my project?
Yes. Memtech Acoustics provides engineering consultation for door selection based on your STC target, opening size, fire rating requirements, application environment, and aesthetic criteria. Installation assistance is available for Michigan and Great Lakes region clients. CAD drawings are included with custom orders, and LEED documentation is available upon request. Contact us to discuss your project scope.
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