Soundproofing a room starts with eliminating air gaps around the door, and our highly-effective and affordable Door Seal Kit features an automatic bottom seal and adjustable jamb seals, which create an airtight seal around your door.


  • Reduces sound transmission through door assemblies
  • Cost-effective
  • Easy to install
  • Durable

The self-leveling bottom seal automatically lowers and levels a heavy-duty neoprene gasket to the wood or metal door threshold when closed. Easily installed on any solid-core door, the Door Seal Kit is the most economical solution to sound leakage around a door.


Auditoriums, bars, restaurants, conference and board rooms, hotels, casinos, retail stores, theaters, schools, audiophile rooms, laboratories, recording studios, houses of worship, manufacturing and industrial facilities, music practice and band rooms, airports, apartments, condos and more.


Side and Top Pieces can be trimmed to any length

Bottom Mechanisms 36″ or longer, can be trimmed up to 3″ total.

Bottom Mechanisms 34″, 32″, and 30″ can be trimmed up to 1″ total. Bottom Mechanisms under 30″ cannot be trimmed.

(no min. height); model: 330C (no threshold) STC=37; 330C (with threshold) STC=43

Click here to see how to install Door Seal Kit

Weight 35 lbs
Dimensions 88 × 6 × 6 in


Product Type

Door, Featured Products

Product Use

Band & Orchestra, Easy Install, Home Theater, Hospitality Industry, Noise Control, Quiet House, Recording & Mixing, Stereo Listening, Video

Top and Sides

HD84, HD96, HDDoubleDoor84, HDDoubleDoor96


30", 32", 34", 36", 48"


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Max Door Width 48″
Min Door Width 24″
Max Door Height Standard 96″
Min Door Height Can be cut down to desired height
Mounting Hardware Included Yes
Quantity 1 kit
HD96 Max Height 96″
MSRP $388.99
Door Seal Kits – Single or Dou...


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