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The M-D Aluminum U-Shape Screw-on Commercial Under Door Seal features a vinyl seal for protection from drafts, moisture, dust and insects. Save on energy by sealing the bottom of the door and keeping the heat or air conditioning from escaping. Screw holes are oval shape to allow for easy adjustment to fully seal the gap at the bottom of the door. All of the hardware needed to install is included. Before installation, cut to desired length using a hacksaw.
From the Manufacturer
Energy loss through the bottom of doors can be minimized with the installation of a door bottom in conjunction with your smooth top threshold. This combination provides a weatherproof seal between the bottom of the door and the top of the threshold. Drip caps also provide your exposed entry ways protection by diverting water away from the door bottom and thresholds. M-D Building Products offers multiple combinations of new and replacement door bottoms and drip caps that will fit most entry doors.
blueyez
Reviewed in the United States on March 1, 2025
Works great
Nailhead63
Reviewed in the United States on February 26, 2025
Strong, reasonable price, good quality. Fits well with one caution, it is 36" exactly, too wide for a typical 3-0 door.
Bob Appleby
Reviewed in the United States on February 22, 2025
Seals the door very well to keep winter winds out and summer A/C inside.
varoujan hovsepian
Reviewed in the United States on December 30, 2024
When you ordered, they send you the aluminum piece. They don’t sell you the important parts in the bottom which is the rubber seal. It’s not worth it to bother with. It doesn’t do the job. I don’t recommend to purchase it. False advertisement.
Jeffery
Reviewed in the United States on November 17, 2024
This fit great. You have to trim with sawsall. Cuts easy, but you should use a vice. You'll have to chamfer a bit for an inward door (most front doors).
Miguel
Reviewed in Canada on August 23, 2023
It works nice, cheap and good solution
Redog17
Reviewed in Canada on February 24, 2023
This is the best I have ever installed on my exterior garage door. Seals perfectly,Very strong, aluminum extrusion not crappy plastic.I didn’t drill pilot holes for screws , just screwed them in the doorThe only trick is cutting to length.A hacksaw will do the job , but I used a zip cut disc on my hand grinder , cut perfectly , file the edges .Great quality productMade in North America too !
Robbyg
Reviewed in the United States on August 25, 2021
I am very happy with my purchase, this thing blocks all the water from coming under my door during a rain storm even with driving wind, This got tested during Hurricane Grace.Pluses:Well built out of good metal and a very impressive wide rubber water stop on the bottom that can slide out and be cleaned or replaced.Installation is easy but remember to coat the inner side of the metal strip that face outside with a bead of silicone or caulk. Water will hit the front of the door and drain down under the front metal lip and rot out your doors bottom if you don't use some kind of sealant.Cutting it to size was easy and can be done with a hacksaw or Dremel.Negatives:Paint coating on the metal can chip easier than I expected. I ended up with two 1/8" chip marks on the outside. I touched them up with black paint.Mine did not come with screws but that was an easy fix as I had some in my tool box.Don't see replacement rubber strips online, I would feel better knowing I could buy them.Summary:Overall very happy with the purchase. It looks good and does it's job very well.
Lisa B.
Reviewed in Canada on October 30, 2020
I like that it looks good, and has flexible rubber. Its working so far, but winter will be the test.The plastic ribbed rubber ones don’t work as the ribs just begin to fall off and you just end upripping them off. The rubber is replaceable.
Fred R. Freshwater
Reviewed in the United States on January 17, 2020
This door weather seal is a very well-made item. The product is anodized aluminum 36" in length and MUST be trimmed to fit, if you have other than an exact 36" door, of which there are MANY. If you do not possess the tools, nor the skills required, then you should probably opt for one of the cheap plastic substitutes - this item is designed and manufactured to last a lifetime but it requires SOME handyman skills to install correctly. For example, those complaining about the rubber strips tearing on the unit, obviously, do not understand the need for a PROPER clearance between the bottom of the seal and the door sill/threshold; this is most easily accommodated by an adjustable threshold. If you have too great a clearance = NO adequate seal. If you have too little clearance = abraded rubber strips, often in short order. Proper tools consist of something adequate to cut aluminum: hack saw, Dremel tool, chop saw, etc. and scissors to trim the rubber strip. Some other complaints consist of missing items, e.g. rubber seal, screws, etc. These MAY have been missing from the manufacturer's packaging but my guess is it's more likely a result of a "return" which was "recycled" to another customer, who can be sure? Another couple of complaints refer to an improper fit but, as one reviewer offered, if your wooden door has already taken on water for a protracted period and, thus, has swollen, you won't get this precisely manufactured item to fit - by then it's too late. Some have commented on the product supplied being darker than the picture; this is true, so beware if you want the color in the picture. I find the actual tone to be fairly accurate to what I see advertised as oil-rubbed dark bronze. OK, so now having lauded the qualities of the product and, hopefully, corrected a few misconceptions, here is what I find inadequate in the design of this product: there is NO thermal break to deter FRIGID outside temperatures, experienced in the winter Northeast, from migrating to the inner 3/4" strip of the U-shaped component. On VERY cold days, I have experienced condensation on this interior aluminum strip as the warm interior house heat contacts this cold strip - not very desirable, especially when it is situated above a hardwood floor. The manufacturer should have allowed for this and provided a thermal break in the design. I have installed this setup on an interior-swing atrium door above a M-D exterior threshold, which does incorporate a thermal break for this reason. M-D should have split this component longitudinally into two overlapping aluminum pieces with an insulator between, or, change the design to a L shape rather than a U shape to prevent cold transmission to the interior "U" strip. Otherwise, GREAT product but I have to knock it 1 star and give it a 4 for this reason.
Hardy
Reviewed in Canada on October 1, 2019
Bottom weather strip is too hard, it needs to be softer and more flexible
Adrian Marmara
Reviewed in Canada on December 18, 2018
Finally found proper door bottom that fits my door. Installed easy and has stopped the cold air from escaping under my door. Good buy!
J & M
Reviewed in the United States on October 11, 2012
This door sweep was installed only 5 short days ago, and it seems to be almost a vacuum-seal type of sweep. I suppose that's what we want, no drafts. The house is old; our door is old and somewhat warped, the frame is old and not quite square, the storm door was removed months ago and the interior door has been exposed to wet weather and humidity all summer as well as the last five days. It may be swollen with dampness. We're hoping that the dry, cold months with a new storm door installed will allow the interior door to be opened more easily (maybe after it dries out a bit.) The rain drip edge on the exterior will help if the screen on the new storm door is left open and rain enters between the doors.This is a bit of an unusual situation to be evaluating this product, but I do think it is a good product for the purpose and for the money. It makes the door look finished, inside and out.Fast forward to January 2013. The effort required to open the door has diminished some maybe due to the cold or repeated us. There is still a very substantial seal. But, the finish on the new threshold is wearing away already due to the sweeping action of the door sweep. We used a finish recommended by a professional career painter, so we don't think it's the fault of the finish. It will require re-finishing in the spring--oh joy! Also, the day after Christmas (we had 22 people here for the day) I noticed dripping condensation all along the metal strip on the INSIDE of the room--so much that it required wiping off. In addition, a small section of the underside ribbing began to pull off and required cutting so as not to continue to rip. My fear is that if this sweep doesn't meet expectations in the long run, we have already cut the door on the bottom and may not find another sweep to accommodate the space. Experience is the best teacher!
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