Sound Lock™ Door Bottom Seal

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Sound Lock Door Bottom Seal

The Sound Lock™ Door Bottom Seal will automatically drop to seal the gap at the bottom of your door. This bottom seal creates positive pressure against any hard flooring surface, significantly outperforming other door seals while maintaining an easy door swing. No threshold required! This product is best for doors that are already sealed around the other three sides with a gap just at the bottom. Any gaps in your solid core door will continue letting sound through! Check out our Sound Lock™ Gasket Seal Kits and Sound Lock™ Adjustable Door Seal Kits to also seal the perimeter of the door panel.



  • Increases solid core door STC rating up to 43
  • Durable and economical door soundproofing
  • Anodized aluminum with neoprene seal
  • Automatic drop mechanism will soundproof the gap below the door panel
  • UL fire rated
  • Use on any hard floor surface (no carpet!)




 Bottom Seal Width   30" to 48" 
 Thickness   1/2" 
 Weight   5 to 10 lbs 
 Color   Silver 
 STC Rating   Up to 5 



Installation Instructions

  1. Confirm that your door is a solid core door. The Sound Lock™ Bottom Seal will not work on a hollow core door.
  2. Open the door.
  3. Measure the width of the door panel from lift to right. Write it down.
  4. The Sound Lock™ Bottom Seal should only be cut a maximum of 2”. For example, a door that measures 31" wide should get a 32" bottom seal.
  5. The bottom seal should drop 3/8” to the floor below.



Common Product Uses

  • Our Bottom Seal alone isn't enough to completely soundproof your door. Use our Gasket Tape Kit or Full Adjustable Kit available as well!
  • Seal the bottom of ANY interior doors
  • Use with solid core doors