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Sound Lock soundproof door (unstained)

Sound Lock™ Soundproof Door

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$5,500.00
In stock.
This product ships in 4 weeks.

Sound Lock™ Soundproof Door

Engineered for performance and design flexibility, the Sound Lock Soundproof Door offers STC ratings up to 56 in a customizable, pre-hung assembly. Choose from multiple wood species, finishes, and window options to match your project’s aesthetic. Trusted by architects and contractors nationwide, it’s the go-to soundproof interior door for demanding spaces.

 

Features

  • Superior Sound Control – Up to an STC 56 for professional-level isolation.
  • Architectural Flexibility – Fully customizable sizes, wood species, and window options to match any design.
  • Pre-Hung & Ready to Finish – Ships pre-assembled and ready to paint or stain, saving installation time.
  • Durable & Attractive – Proprietary wood construction built for long-lasting performance and aesthetics.
  • Fire Rated for Safety – 60-minute fire rating available on request
  • Compatible with Any Hardware – Use our hardware or customize with your own (including electronic locks and access control systems) 
  • Made in the USA – Precision crafted domestically for quality assurance and faster lead times.

 

Specs

 Max Door Panel Size   Up to 5' x 10'  
 Rough Opening Size   Add 2" to width | Add 1.5" to height
 Door Thickness   2-3/4" 
 Wall Thickness Fit   4-7/8" to 12" or more
 Weight   350+ lbs 
 Wood Type   Oak (standard), Maple, Birch, Cherry, Walnut, Other on Request  
 Window Options   10" x 10", 6" x 28", 22" x 28", 22" x 56" 
 STC Rating   Up to STC 56
 Fire Rating   60 minute w/ Medite Core
 Customizations   Double Doors, View Windows, Electronic Strike, Door Closers, Kick Plate 
 Other Certifications   ADA Compliant
 Lead Time   4 weeks

 

Resources

 Spec Sheet  Sound Lock Soundproof Door Product Sheet 
 Hardware Options   Sound Lock Hardware Options 
 Architect CSI Spec   Sound Lock Door CSI Spec 
 Install Guide   Sound Lock Soundproof Door Install Guide 

 

Material Testing

Sound Transmission Class

 Frequency (Hz)  125   250   500   1000   2000   4000   STC 
 Transmission Loss (TL)   38   42   54   61   64  72   56 

 

 

 

 Type of Sound Lock Soundproof Door 
 STC Rating 
 Door with No View Window 56
 Door with Small Window (6" x 28", 10" x 10")  53-55
 Door with Large Window (22" x 28", 22" x 56")  51-53

 

 

 

 

 

All view windows use the same construction as our Tru Acoustics soundproof windows (STC 49) to maintain soundproofing integrity. 

 

diagram-door-swing-comp.jpg

 

Installation Instructions

Always read the full install guide prior to beginning installation! The Sound Lock Soundproof Door weighs 350 lbs and is designed for top-end soundproofing. Installation should be done with tight tolerances and attention to detail.

  1. Prep Rough Opening – Verify rough opening size and that the RO is double studded. Back steel studs with wood studs. Bottom seal must drop onto a hard surface (no carpet).
  2. Unpack & Position – Remove bottom plate, check door swing, and place door in opening.
  3. Shim & Secure Hinges – Install shims behind hinges, replace hinge screws with heavy-duty ones, and confirm hinge side is plumb.
  4. Latch Side Setup – Shim to 1/8" reveal, align strike, and raise or lower jamb to align.
  5. Jamb Extension (if needed) – Cut extension to size, glue, and nail into place.
  6. Seal Door Frame – Insert backer rod, apply acoustical sealant, and reinstall trim.
  7. Hardware & Seals – Install handle set and secondary seal. Adjust jamb seals and bottom seal. Install wood cap kit to conceal jamb seals.

Detailed step-by-step instructions are in our Sound Lock Soundproof Door Install Guide.

 


Common Product Uses

Type of SpaceUse Case
 Recording Studio   Isolate your control room, live room, and vocal booth. Pair with a Tru Acoustics STC 56 Window. 
 Office / Conference Room   Ensure privacy for meetings and reduce distractions in shared workspaces. 
 Music / Band Room   Contain loud rehearsals and protect adjacent spaces from sound transfer. 
 Government / Military   Provide secure, sound-isolated environments. 
 Auditorium / Performance   Maintain sound quality by controlling noise transfer in large venues. 
 Manufacturing Facilities   Isolate loud equipment areas to protect offices and break rooms nearby. 
 Home Theater / Media Room   Create a true immersive environment while keeping a beautiful aesthetic.  

To compare with other door soundproofing options, check out our article on how to soundproof a door.