Model # 49008

Internet #100353441

Store SKU #430374

M-D Building Products 4-9/16 in. x 36 in. Satin Nickel Aluminum Adjustable Thermal Break Threshold

M-D Building Products

4-9/16 in. x 36 in. Satin Nickel Aluminum Adjustable Thermal Break Threshold

  • Thermal break design precents frost build up on interior surfaces
  • Adjustable threshold to seal varying gaps
  • No rot no warp composite design
$2728 /each

Frequently Bought Together

Product Overview

This MD Building Products 3 ft. x 4-9/16 in. x 1-3/8 in. Satin Nickel Aluminum Adjustable Thermal Break Threshold helps seal gaps under your door between 1-3/8 in. - 1-5/8 in. to help make your home more energy efficient for your convenience.

California residents: see   Proposition 65 information

  • Heavy-duty aluminum construction with a satin nickel finish
  • Seals gaps from 1-3/8 - 1-5/8 in. high between the bottom of your door and the floor to help to seal out drafts
  • Use with a door sweep for best results (door sweep sold separately)
  • Helps save energy and make your home comfortable
  • Adjustable PVC oak finish riser helps provide a weather tight seal against the floor
  • Provides all-season protection against drafts, moisture, dust and insects
  • 36 in. L

Info & Guides

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Warranty / Certifications

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Customer Questions & Answers

What is the height of the top of the slop?

My existing door was originally installed without a threshold and the ground is uneven with one side having a gap of 3/4" on one side and the other about 1 1/4". The difference is about 1/2" from one side to the other.
Asked by: Fixer
Thank you for your question. The riser can adjust from 1-3/8" to 1-5/8" and slopes down to 5/8" in the front.
Answered by: MDBuildingProductsSupport
Date published: 2017-05-01

Can this threshold be cut down to fit 2'8" door

Asked by: Rondoggo
It could be cut down.
Answered by: CommunityAnswer
Date published: 2017-02-02

Does this threshold come with the extension that slides into the groove on the aluminum / outside...

Does this threshold come with the extension that slides into the groove on the aluminum / outside for extended door jam, or 6 ¾ jam depth? Or what is its part# to order it?
Asked by: Iken
We make a 2" extender but it does not come with the threshold
Answered by: MDBuildingProductsSupport
Date published: 2017-02-10

can I get a replacement screw cover / cap?

Asked by: Andy
Yes, please call our customer service team @ 1-800-654-8454 and one of our team members will mail them to you. Thank you for the purchase of our product. M-D Building Products
Answered by: MDBuildingProductsSupport
Date published: 2016-09-21
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Customer Reviews

4-9/16 in. x 36 in. Satin Nickel Aluminum Adjustable Thermal Break Threshold is rated 3.4 out of 5 by 8.
Rated 2 out of 5 by from Installation Instructions need some improvement The enclosed installation instructions were totally insufficient. I spent close to an hour trying to match up the enclosed instructions with the product, The instructions say to snap the the adjustable cap onto the threshold, remove the caps and turn the adjustment screws. In reality the adjustable cap was in a separate plastic bag from the caps and adjustment screws. So I had to figure out how the assembly was supposed to be put together. I went to the manufactures website looking for instructions but found only a copy of the same instructions that came with the product. At first I thought that maybe I had the wrong instructions, so I looked at the dimensional diagram on the Home Depot website that showed the internal parts, however, the picture has the internal parts shown upside down from what was actually practical. Then after assembling the internal screws and positioning the adjustable cap, 2 of the track mounting screws were conflicting with the adjustment screws. Lastly, I had to beat the adjustable cap down onto the track to get it to the minimum height. For such a simple assembly, I couldn't believe the amount of guess work I had to go thru to get the product installed. If there was another product that would have suited my needs, I would have returned this one for a refund and went with another product.
Date published: 2016-03-25
Rated 5 out of 5 by from Excellent product! This particular threshold was a replacement for a similar product which had been in place for 25 years. The most difficult job was to remove the old one without tearing up the door molding. Once the old one was out I carefully smoothed down the concrete under the threshold and made sure the new one slid in easily. Where it was bound up I carefully ground down (or up as the case may be) enough to make clearance. Once the new one fit in correctly I carefully screwed it to the underlayment boards, filled in with wood putty or sealer, put silicone sealer on the front side facing out and primed and painted the door molding. I put a little soapy water with a sponge over the adjustable top and, following directions on the packaging placed the top wooden piece into the slot and tapped it down with a soft mallet. Everything worked out well and I am very satisfied.
Date published: 2014-09-01
Rated 5 out of 5 by from Easy to work with Free delivery is a big plus, fast delivery seals the deal.
Date published: 2016-09-06
Rated 1 out of 5 by from Poor adjustability Good quality, but not really adjustable... the "adjustment" screws were still loose even at the lowest setting. At any higher settings, the board was not secure and would not support any weight. The threshold may sit higher, but if it doesn't support weight it's essentially worthless. Bought this product for the adjustability and to help close the gap between the door and the threshold, however after cutting the product and removing the old threshold, I'll still be searching for another item for my application. I DO NOT recommend this product.
Date published: 2015-09-17
Rated 2 out of 5 by from Good Product - poor experience trying to purchase I ordered this item on line and learned the item was available at a store on my way to work in Tempe, AZ . The next morning I received a call saying the item was not available and they would refund my money. The store employee made no attempt to help me locate the item at another store. Later that day, I found out that I was going to be working about 60 miles from the first store so I purchased the item on-line and requested the item to be picked up at a store in Surprise, AZ. When I arrived at the Surprise store , I was told that the employee could not locate the item. I was in a hurry so I went back and helped him look. After 15 minutes of the employee looking at the same boxes and unable to locate the threshold, I found what I ordered. The threshold was not wrapped but someone wrote a SKU number on the back side. The employee checked the SKU number and said "This is not what you ordered." I told him yes it was and showed him the picture from the order on my phone. The employee said at least three times "but it has a different SKU number written on the item." Finally I said, I changed my mind I want to buy this item instead. He was not paying attention to me and could not understand that maybe another employee wrote the wrong SKU number. So after he handed me the item I noticed there was no hardware or instruction with the unwrapped threshold. The employee opened the packaging to a similar but different threshold and said "here just use these screws and instructions." I knew I was going to regret it but I took the hardware and left the store. I regret not saying something to the manager or maybe I should have waited for a store in my area to have the item because I don't think everything is installed properly. I secured the threshold to the concrete floor but I don't think the adjustable part is installed properly because, well frankly, the screws the employee handed me from the other threshold do not fit properly. So they are sitting in my garage on a shelf.
Date published: 2016-03-30
Rated 3 out of 5 by from Adjustment range misstated The product looked to be well made but I had to return it because the package label says that the adjustment range minimum is 1-3/8" versus the 1-1/8" stated in the website description.
Date published: 2014-11-11
Rated 4 out of 5 by from Solidly made product This is an excellent product. It is heavy gauge and solidly constructed. I would have rated it as a “5” but it was not complete. All of the packages had been opened and the installation screws had been removed. I purchased it in spite of that fact because it filled my needs far better than the other alternatives I found.
Date published: 2011-12-07
Rated 5 out of 5 by from Looks great. Easy to Install Purchased and installed in the same day. Both processes went smoothly. It is sometimes tough to install one of these back in after removing the old one, but I removed all the flooring so it slid right into place with minimal adjustments. Looks high quality compared to the "plain" solid colored plastic ones.
Date published: 2015-05-12
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