Quiet Door™ Adjustable Perimeter Seal

35 in stock



When you go to sleep at night, you anticipate the bliss of pure, simple silence. Unfortunately, the outside world is noisy, so that may not always be the case. Don’t lose sleep over outside noise. Our line of adjustable soundproof door seals may just be the ideal fit for you!

Our adjustable soundproof door seals even have the word “quiet” in their title. There’s no better way to get the silence you deserve than with a product crafted to perform efficiently and effectively. Currently, your door may not be receiving the added soundproofing and noise reduction necessary for fully keep exterior noises out. At Soundproof Cow, we offer adjustable door soundproofing materials to cover all of your room’s bases — even the spots you least expect sound to leak through.

Save Energy, Time and Money

Our Quiet Door™ Adjustable Perimeter Seals provide easy installation, ensuring even the most uninformed do-it-yourselfer can mount their seals with ease and simplicity. All that’s required are a few basic hand tools and our simple instructions manual help you finish the job.

While our adjustable soundproof door seals protect your room from outside noise, they also simultaneously work to provide you with energy savings every month. You’ll find your thermal capabilities improving as your airflow transfer is reduced. Built with high-quality aluminum framing, your seal will save you time and money by ensuring longevity of use.

Ready to place your order for a Quiet Door adjustable perimeter seal? Simply place your order with ease online or contact us for a specialized request.


Dimensions Fits 32 in. to 36 in. wide x 86 in. door
Color Aluminum
Contents (1) – 1/2″ thick x 1 1/2″ wide x 36″ long
(2) – 1/2″ thick x 1 1/2″ wide x 86″ long
Availability Usually ships in 1-3 business days
Technical Data Product Data Sheet
Installation Step-by-Step Instructions


Quiet Door™ Adjustable Perimeter Seals reduce sound transfer through doors by forming a tight fit around the perimeter of new doors with cheap seals, or existing doors, with old worn-out seals. These seals can be used on wood and metal doors. Quiet Door™ Adjustable Perimeter Seals are made of heavy duty aluminum framing, long lasting silicone seals and include all stainless steel hardware. Silicone seals remain flexible in a variety of temperatures and resist tears better then the less durable, widely available vinyl and foam seals. Quiet Door™ Adjustable Perimeter Seals are adjustable, meaning that as the seal material starts to wear, with a couple turns of the screwdriver the soundproofing seal is reestablished and will perform as it did in brand new condition. Our Quiet Door™ Adjustable Perimeter Seals will decrease air flow, increasing the thermal performance of any door.

Product Availability

Also available in Quiet Door™ Perimeter Seal

Special Order Colors/Sizes are available.

For details, call 1-866-949-9COW.

Features / Benefits

Acoustically Tested — Quiet Door™ Adjustable Perimeter Seals are tested for acoustic performance by independent laboratories.

Quality — Quiet Door™ Adjustable Perimeter Seals are manufactured with high quality aluminum framing and have durable, long lasting Silicone seals. All included mounting hardware is made of stainless steel. These products are considered industrial grade.

Longevity — Due to the adjustable nature of this product, the sound seal can be reestablished as the seal materials age.

Ease of Installation — Quiet Door™ Adjustable Perimeter Seals install easily and only require a drill / drill bits , for pre drilling, and few basic hand tools. Detailed instructions are included in the packaging.

Energy Saving — Quiet Door™ Adjustable Perimeter Seals not only improve the soundproofing performance of common doors, but they also improve the thermal capabilities by reducing airflow transfer.

Variety — Quiet Door™ Adjustable Perimeter Seals are sold in packages that treat a standard 36 in. x 86 in. door. For doors smaller simply trim the material to fit. For larger doors we will custom build to your door. For over-sized door applications, please contact our Acoustic Consultants for information.

Made in the USA


Great for:

  • Apartment and Condo Doors
  • Band Practice Rooms
  • Broadcast Studios
  • Computer and Equipment rooms
  • Dog kennel Doors
  • Home Theater Doors
  • Hotel and Resort Doors
  • Office and Conference Room Doors
  • Recording Studio Doors
  • Warehousing and Industrial Manufacturing Facility Doors

Acoustic Data

Soundproofing seals and sweeps are tested with operational doors. Operational meaning they open and close like a door should. Then, a separate test is completed on a “static door”, a door that is non operational. The static door will have a higher Sound Transmission Class (STC) number due to the lack of air gaps. When a door is hung the soundproofing performance plummets because of the additional air spaces. Compare the static door rating to the operational door rating. The smaller the difference in STC rating, the better the perimeter seals and sweeps will reduce noise transfer.

All of our Quiet Door™ Soundproofing products were tested as assemblies and not single products. Our tests included perimeter seals, doors sweeps and thresholds. For help in choosing an assembly or single product for your situation, please give our friendly consultants a call at 1-866-949-9269.


UL10B & CAN4-S104-80M CLASSIFIED — complies with NFPA 80 and NFPA 252 for application to Steel fire doors rated up to 3 hrs., and Wood type fire doors rated up to 1 ½ hrs. (Rating on some items may vary and are noted.)

POSITIVE PRESSURE UL10C CLASSIFIED — Category ‘J’ listed. Complies with IBC, UBC7-2 (1997) NFPA 80 and NFPA 252 for application to Positive Pressure Steel fire doors rated up to 3 hrs., and Wood type fire doors rated up to 1 ½ hrs. (Rating on some items may vary and are noted.)

SMOKE & DRAFT CONTROL GASKETING — Category ‘H’ listed. Complies with IBC, UBC7-2 (1997) Part 2, UL1784, NFPA 105 for use on ‘S’ labeled Positive Pressure Steel fire doors rated up to 3 hrs., and wood type fire doors rated up to 1 ½ hrs.

ACOUSTICAL TESTED — to ASTM E90 and ASTM E413, by Riverbank Acoustical Laboratories in Geneva, IL.

AIR INFILTRATION TESTED — to ASTM E283, Standard Test Method for Determining Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors.

ANSI/BHMA CERTIFIED — Certified gasketing complies with A156.22-2005, and is listed in the BHMA Certified Products Directory.

Cautions and Limitations

The Quiet Door™ line of perimeter seals and sweeps can be used on almost any door to reduce sound transfer and they can be used on almost any door type. Some older doors may not have enough mounting area. Please double check all measurements and dimensions.

The Quiet Door™ line of perimeter seals and sweeps may need to be trimmed to fit. When trimming our Adjustable or Automatic products, care should be taken to not cut internal mechanisms that could impact the functionality of the product.

Some pre-drilling is required.

Installation Details

Tools Needed: Drill, #38 Drill Bit, Phillips Screwdriver, Tape measure, Hack Saw (for trimming)

Materials Needed: All materials are included with purchase

Installation PDF

Quiet Door Install

Good product, I used this and the door sweep that drops down and they both really helped. If I was to complain I would say the only thing is that getting it mounted so it shuts perfectly was a pain, but it was still worth the struggle.

"The times I talked with you on the telephone and corresponded through email you have been very helpful and efficient. I would highly recommend to anyone!" S. CIMINO, LA