Tsunami Seal 18 ft. Gray Garage Door Threshold Kit-51018 - The Home Depot

Tsunami Seal

Model # 51018

Internet # 202199773

18 ft. Gray Garage Door Threshold Kit

Tsunami Seal 18 ft. Gray Garage Door Threshold Kit

This item has been discontinued.
The Home Depot no longer carries this specific product.

$100.95 / each


Model # 51018

Internet # 202199773

The Tsunami Seal Garage Door Threshold Seal mounts to your garage floor creating the perfect seal between your door and your garage floor. The Garage Door Threshold Seal creates a tight seal for your garage door which will keep leaves, dirt, water and snow from being blown under the garage door by the wind. Also, if you have a sloped driveway or an uneven garage floor and water is seeping under your garage door, the Door Seal adds a 1/2 tall barrier to the garage floor. The Door Seal will also help keep out unwanted insects and snakes. By creating a better seal, your garage will stay warmer during the winter and cooler during the summer, helping to keep your energy cost down. The Door Seal works great with all types of garage doors including roll up doors, hinged wood doors and walk through doors. The one piece strip is permanently secured to the garage floor with the included Liquid Nails Polyurethane Adhesive. Each kit includes the one piece Threshold Seal, two cartridges of Liquid Nails Ultra DutyTM Poly Adhesive, a metal caulking gun and color installation instructions. Comes with a Lifetime Warranty.

California residents: seeProposition 65 information

  • Creates a barrier against water, leaves, dirt and snow
  • Keeps out insects, snakes and rodents
  • Garage stays warmer during the winter and cooler during the summer
  • Helps to save energy
  • Works with roll up doors, hinged doors and walk through doors
  • Includes two cartridges of liquid nails ultra duty poly tm adhesive
  • Includes a metal caulking gun
  • Lifetime warranty

Info & Guides

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Assembled Depth (in.)  3.5 in  Assembled Height (in.)  0.5 in 
Assembled Width (in.)  216 in 
Garage Door Part/Accessory Type  Garage Door Seal  Hazardous Code 
Product Weight (lb.)  9.9 lb  Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  Lifetime 


Rated 4.3 out of 5 by 12 reviewers.
Rated 5 out of 5 by great product for threshold seal had read previous reviews and was prepared for some problems. calking gun provided was already bent out of shape when box was opened. But I was prepared with a second gun already on hand. comes with two tubes of liquid nails. Only needed the one tube, still had plenty left over . So more than enough for the job at hand. I am very pleased with this product. has already done the job i wanted it to do. looks like it should last 15 years or better. December 17, 2014
Rated 5 out of 5 by Very good product Easy to install, haven't had any heavy rain since , but looks like it will do it's job. October 17, 2012
Rated 5 out of 5 by Worked great, easy to install, caulking gun is useless, kind of expensive I had water coming under my garage door during storms and my door seal was still in good condition. This totally solved my problem no more water and I've had at least two good storms since installation. For the price I wish they would have included a quality caulking gun not something that appears to have cost $0.25 to make. I'm not joking it's really bad. I really hope this holds up for years the seal is high quality so I think it will. March 11, 2014
Rated 4 out of 5 by Tsunami threshold was great, the caulking gun was not! I found the Tsunami threshold to be of high quality and attractive but when I went to install it using the supplied caulking gun, the trigger part of the caulking gun bent beyond repair and had to be trashed. Good thing I had my own caulking gun! And it was 80 degrees and the supplied construction adhesive had the spout cut large and the inside seal had been punctured numerous times. The caulking gun is garbage. Make sure you have your own caulking gun if you plan to order this product! October 15, 2011
Rated 4 out of 5 by Easy to install and really works to seal out water and drafts The product is well made and easy to install. The installation for both nine foot garage doors took less than an hour. We have had heavy rains since the installation and the garage has stayed bone-dry. October 1, 2013
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