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Sound Lock™ Soundproof Door

Interior soundproof door with an STC value up to 56. Attractive wood finish comes pre-assembled with adjustable soundproof jamb and bottom seals.

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Sound Lock™ Soundproof Door

The Sound Lock Soundproof Door is a beautiful, wood soundproof door that will upgrade the aesthetic of any room. It features top end soundproofing (STC 56) at an affordable price, all shipped straight to you as a pre-hung door that's ready to be painted or stained. Need customizations? We can fully customize this door to meet any requirements. Reach out to start a conversation today!



  • High performance soundproof interior finished in real oak veneer
  • STC rating up to 56
  • Attractive and durable
  • Cost-effective door soundproofing option
  • Pre-hung and pre-assembled for a simpler installation
  • Ready to stain or paint to match your design aesthetic
  • Proudly made in the USA 



 Dimensions   Up to 5' x 10'  
 Thickness   2-3/4" 
 Weight   350+ lbs 
 Wood Type   Oak (standard), Maple, Birch, Cherry, Walnut  
 Window Options   10" x 10", 6" x 28", 22" x 28", 22" x 56" 
 STC Rating   Up to STC 56
 Customizations   Double Doors, Hardware, Windows, Fire Rated, Door Closers, Kickplates 
 Lead Time   4 weeks



 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 Soundproof Door 
  STC Rating 
 Standard Door 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. 




Installation Instructions

  • Door is designed for a 2x4 or 2x6 construction. 6" jamb extensions available to meet any wall thickness
  • Recommended to double stud the entire opening. At minimum, you must double stud the hinge side of the door. Steel studs should be backed with wooden studs.
  • The bottom seal must drop onto a hard surfaces. For carpeted floors, you must put in a hard transition.
  • Adjustable and mechanical seals are built into the door. Adjust them correctly before putting the caps on the door.
  • This door weighs 350 lbs and is designed for top end soundproofing. Installation should be done with tighter tolerances and attention to detail. READ THE GUIDE before attempting installation.
  • Download the Sound Lock Soundproof Door Install Guide


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