M-D Building Products 78618 5-5/8 in. x 1-1/8 in. x 73 in. Silver Adjustable Aluminum & Hardwood Threshold

Our old threshold was in bad shape due to water infiltration. Looked around for a comparable replacement. Saw one online at Home Depot for over $100 but it was not in stock locally. Looked on Amazon and found what looks like the exact same item for less than half the price. Got it quickly but it only came with 4 nuts and bolts - we got the 73 inch version which should have come with 8 nuts and bolts, to match the 8 mounting holes.I contacted Amazon but they could not send additional hardware - only offered a refund or replacement (which I thought was overkill). So I contacted MD Products and they are shipping the extra hardware for free. I did a test installation with the 4 bolts and it looked good and fit nicely, once trimmed.As others have said, the wood part is held together with staples that don't hold that well, so I reinforced that with wood glue and a few finish nails (with pre-drilled holes, so as not to crack the wood) and this made it much sturdier. Also, check the photos in other reviews here on Amazon for great tips on how to secure the washers to the bolts. The included instructions for that were a little vague.

After installation, you will need to drill or cut a hole and add a strike plate for the lower door post to lock into. Item came poorly wrapped and unprotected but, the company shipped me replacement parts for what was lost.

As another reviewer suggested, this 73" threshold seems to be from "seconds" stock from M-D, hence the lower price than the 72" version available at box stores. The one I received had a very minor flaw in the wood on the underside, nothing that would affect installation or use. I would not buy this without 'free returns' available, in case the one received has unacceptable flaws. But mine also did not match the provided instructions for pushing the washer onto the bolt. Instructions show it sitting flush, so using a hammer with a socket to tap the washer into place would work. The item I received has the bolts sitting below the top surface by about 1/8" (as if a small wood plug could be place above to hide it?) Because of this difference, I completed the assembly by using a bench vice rather than a hammer. This allows a spacer (I used a hex nut) to be taped to one side of the vice, against which the bolt head can sit while the socket presses the washer on. See images. This made it very easy to turn the vice until the washer was snug.Aside from the above, installation follows the instructions. An angle grinder makes short work of trimming. (Tip: to remove your old threshold, slice it down the middle and take it out in two parts.) The aluminum and visible wood on my unit was flawless. I really like that it is adjustable since my old house has some issues with level floors, and also seasonal changes can affect the tightness of the door. I paired my installation with the M-D Building Products 69554 1-3/4-Inch by 36-Inch DB003 U-Shaped Door Bottom with Drip Cap. It's a quality component and mates well with the threshold.

French door threshold was my use and it worked very well. Things to note: as the instructions (hopefully your comes with them) stated that the supplied washer looking lock rings need to be tight against the underside of the floating plate. I used the barrel of a universal screwdriver to bang it tight. Once in place they are very difficult to remove. I needed to convert a single door threshold to non-adjustable and had to cut the washers off. These washers create the adjustment feature. Why "3rd time a charm" It took 3 shipments to Hawaii for them to get me the item I ordered. I gave up on Prime free shipping and paid for for it and magically the right item arrived. Oh well, at $75 with shipping it was a steal.

When we were storing some 1.6 scale steam locomotives in our heated building, I had to cut the original threshold to permit the track to go under the door. When the locomotives went to new homes I replaced the cut threshold with this one, not only did it fit perfectly, it is actually tighter for weather than the original one. Highly recommended if you have to change a door threshold.

Delivery Issues:I had to wait an unreasonable 4 weeks for this product to be delivered. The extended delay was frustrating and inconvenient.Poor Quality:When the threshold kit finally arrived, I was extremely disappointed to find a large knot in the wood with a significant chunk missing from it (see attached image). This defect is not just an aesthetic issue but also compromises the structural integrity of the threshold.Durability Concerns:Given the poor condition of the wood, I have serious doubts about the durability and longevity of this product. For something that is supposed to withstand frequent use on an exterior door, the quality is simply unacceptable.Overall:I cannot recommend the M-D Building Products 78618 threshold kit. The long wait and poor quality control make this product a bad choice. Save your time and money, and look for a better alternative.

I purchased this item for our back door entrance. After purchasing I read reviews and saw that some people had received the small one. However after it arrived in a super long box there was no doubt it was the right size. This threshold was really nice and super easy to install. I was able to trim about an inch off to fit my opening. Compared to other models I saw for 3 times the price, this is well worth the price and looks awesome.

Couldn’t find the bigger sizes in store so I managed to find it here. Works great

It was perfect for a double door we installed in our cabin. Fits perfectly in a 2x4 wall construction and was easy to cut to size.

I am so happy with this purchase. It is impossible to find door sills these days. Door and window companies stopped supplying framing materials for old doors. I wanted to re-purpose older doors that suited my needs without having to buy new doors and toss them out. You have to purchase the door to just get a new frame. This was the best thing ever! Thank goodness.

Perfect for my needs. Good quality and competitive price.

Easy installation, good price