Sound Lock™ Adjustable Door Seal Kits

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Sound Lock™ Door Seal Kits

A standard door can have as much as one square foot of airspace around the edges. Imagine if you had a 12" x 12" hole in your wall! It wouldn't block very much noise, would it? The Sound Lock™ Door Seal Kit is the durable and effective solution to turn a solid-core door into a soundproof door



  • Seal airspace around a door to reduce sound transmission through door units
  • Adds up to 20 STC points (MAX: STC 51)
  • Durable, anodized aluminum casing with a soft, neoprene rubber seal
  • Each kit includes 3 adjustable jamb seals and an adjustable bottom seal
  • Economical alternative to the Sound Lock™ Soundproof Door
  • The bottom seal and jamb seals are adjustable to allow for an airtight fit on any standard door


Sound Lock™ Door Seal Kits - Standard

  • The standard kit is appropriate for most door soundproofing projects.
  • Adjustable Jamb Seals: 1/2" thick, 1-5/16" wide
  • Bottom Seal: 17/32" thick, 2-5/32" wide

Sound Lock™ Door Seal Kits - Heavy Duty

  • The heavy duty kit features thicker metal and should be used for high traffic or industrial projects.
  • Adjustable Jamb Seals: 7/8" thick, 2-5/16" wide
  • Bottom Seal: 7/8" thick, 2-5/16" wide



 Jamb Seal Length   (1) 36" x (2) 96"+ 
 Jamb Seal Width   1-5/16" or 2-5/16" (HD)
 Bottom Seal Length   2-5/32" or 2-5/16" (HD)
 Bottom Seal Width   30" to 36"+ 
 Thickness   1/2" or 7/8" 
 Weight   Roughly 10 to 20 lbs 
 Durability Options   Standard or Heavy Duty  
 STC Rating   Up to 20 STC points, Max STC: 51 




 Install Guide   Sound Lock™ Door Seal Install Guide PDF 
 Install Video   Sound Lock™ Door Seal Install Video 



Installation Instructions

  • Sound Lock™ Door Seal kits should not be used on a hollow-core doors
  • For carpet applications, a flat smooth threshold (not included) should be used.
  • Recommended 1-1/2" of flat space on the door jambs to install the jamb seals.
  • The ideal bottom seal height off the floor is 3/8", but no more than 1/2".
  • Download our Sound Lock™ Door Seal Install Guide PDF


How to Measure Your Door

  1. Open the door.
  2. Measure the distance from the floor to the top of the door frame. Write it down.
  3. Measure the width of the door frame across the top frame. Write it down.
  4. Double check your measurements to ensure you get the correct sized kit. The bottom seal should only be cut a maximum of 2".



How Soundproof Will My Door Be with the Sound Lock™ Door Seal Kit? 

 Type of Door   Est. STC Rating   Advice From Second Skin Experts 
 Hollow Core or Foam Filled Door   STC 20 to 35  Upgrade to a solid core door before soundproofing
 Solid Core Door  STC 38 to 51  Get the heaviest door that matches your budget/aesthetics 
 Sound Lock™ Soundproof Door  STC 56  Interior wood door that maxes out performance and can be customized to fit your needs 
 Two Doors Back to Back  STC 60+  Two sealed doors back-to-back will soundproof what one door alone cannot



Common Product Uses