M-D Building Products 05520 36 in. Gray Vinyl Replacement Insert for Under Door Seal

This seal didn't fit perfect but well enough. it was just a bit too narrow but seals well. I would buy more but the price went way up right after I ordered this one. I don't know why.

This just fits, plain and simple. Having replaced many of these over my lifespan, I popped down to the local Ace and picked up the one I seemingly buy about every 10 years. It was the only one they had, just like 10 years prior, and thus I assumed it was the one I needed. It was immediately apparent that it was larger than the one I was replacing.So, I hopped on the Googles and found this one. Double checked my measurements and sure enough this is the one that I needed. I have no idea why nobody carries this one, but I can't even find it on MD's website which suggests they've discontinued it.Anyway, this one fit and it arrived quickly. It works fine and in about 10 years I will go back through this whole ordeal again, likely replacing the entire threshold since I'm wagering I won't be able to buy this one again.

Easy replacement, great quality. Screw down aluminum to threshold and simply place rubber gasket over the runs that it will secure into and press in by hand, finish by foot

While the raised portion of this "replacement insert" for a door threshold seal matches my 3/4" metal threshold, the lips to lock the insert in place are nearly a 1/4" too narrow to secure the seal. We'll see. Since I only need it temporarily until remodeling is finished and a wind-hurricane new front door is installed, it doesn't matter much to me. I also paid only $3.84 USD, but to review the item I see the price has jumped to $16.26 USD in 7 days! So the size, fit, price, and no warranty make this a poor choice.

The insert is advertised as a 1 in wide but is actually a 1 1/8 inch W. I could not find it locally. None of the Big box building supply stores or hardware stores carried this width. Some stores had an advertised 1 1/8 wide insert but were actually 1 1/4 inch wide and did not fit. Tried cutting them down but destroyed the insert in the process. Amazon was the only web site advertising the 5520 (1 in wide). Shipping was extra and not covered by Prime. The install was easy and an exact fit width wise, however I did cut off about 1/4 in in length. I tried putting it all in but it forced the center of the insert up and I couldn't close the door. After the cut, the fit was tight but the door closed. I'm sure the insert will flatten out after a few weeks of constant use. Updates to follow, if I remember.

Right product and fit the existing channel as I bought this for replacing a worn one. The issue is that a new one is so stiff, we had trouble closing the door for a few weeks. Now about 4 to 6 weeks or more later, it has become pliable and we can again normally use the door. I truly worried my wife would not be able to close and lock the door after walking the dogs (so did she). We figured it out with the help of time. At first we had to literally "shoulder the door" to close and latch. Would give it five stars if it was more malleable out of the carton.

As expected.

My old door insert stretched out and was out of the track in the middle. I was concerned with people tripping on it when entering my home. I could not find the correct replacement so I cut it and pulled it out to be on the safe side. Then I checked Amazon and found this one. It worked perfectly! At first it was hard for me to put it in the track but then I watched a you tube video and it could not be more simple. Very pleased.