

🚪 Seal the deal on comfort and savings—your door’s new best friend!
The M-D Building Products Vinyl Cinch® U-Shape Door Bottom Seal is a durable, easy-to-install weatherstripping solution designed to fit standard 36” x 1-3/4” doors. It effectively seals gaps from 3/8” to 3/4”, blocking drafts, dust, and noise while enhancing energy efficiency and reducing HVAC costs. Crafted from high-quality vinyl, it offers long-lasting protection and a sleek, slide-on design perfect for quick DIY upgrades.










| ASIN | B00P4QHJNG |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #1,140 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #21 in Door Hardware & Locks |
| Brand | M-D Building Products |
| Color | White |
| Customer Reviews | 4.2 4.2 out of 5 stars (6,571) |
| Date First Available | November 2, 2014 |
| Global Trade Identification Number | 00043374433364 |
| Included Components | MD Building - 43336 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Thickness | 1.75 Inches |
| Item Weight | 11.2 ounces |
| Item model number | MD Building - 43336 |
| Manufacturer | M-D Building Products |
| Material | Vinyl |
| Measurement System | Inch |
| Number Of Pieces | 1 |
| Number of Items | 1 |
| Part Number | 43336 |
| Pattern | Solid |
| Product Dimensions | 36"L x 2"W |
| Recommended Uses For Product | Under Door |
| Shape | Rectangle |
| Size | 36 Inch |
| Style | Door Seal |
| UPC | 043374433364 |
| Unit Count | 1.0 Count |
F**B
Easy install, flexible cutting options (hacksaw OR tin snips)
These replacement door sweeps were much easier to install than I expected 👍 🔧 Installation • Pulled the old sweeps off and used them as a length guide • New ones slid right on with no fuss • Took just a few minutes per door ✂️ Cutting options (worked great for French doors) • We cut one with a hacksaw, as recommended • For the second sweep, we used tin snips instead and it worked perfectly • Tin snips were especially helpful because this was a French door where the trim between the doors doesn’t touch the ground • The outside piece fit neatly over the trim, while the inside covered the gap 🚪 Fit & function • Covered gaps well • Sealed nicely at the bottom • Everything lined up cleanly once installed Overall, these are very easy to use, forgiving if your door setup isn’t perfectly standard, and worked well with both a hacksaw and tin snips. If you’re replacing worn door sweeps, this is a straightforward, DIY-friendly option.
T**N
Easy to install and works!!
For me, the vinyl-bottom door weather strip was a great improvement. It was simple to install, and after I did, it effectively sealed the space beneath my door and reduced moisture, dust, and drafts. I saw an instant improvement in insulation and general comfort, and the vinyl is flexible enough to fit the floor while yet feeling sturdy. It's not flashy, but for the price and ease of use, it fulfills my needs perfectly.
P**A
Exceeded my hopes!
This was amazing! It changed the temperature of the room immediately! I saw no new crickets crawling in, which was an issue! My cats will be disappointed, but I'm thrilled. I installed it very easily, my son trimmed it with snips, it's snug, looks good and does both jobs I wanted it for better than expected! Definitely would recommend!!!!
T**D
Great product, but didn't fit my needs.
Didn't fit my door, despite measuring, but I see what the issue was. Our door is just too low for the bottom part. When I tried to send them back, apparently, it was cheaper for me to keep it, so they gave me my money back. I don't know what I'm going to do with it, but I was pleased about the service - as usual. It's a shame because it seems the product is of high quality and really would have done a great job in protecting from drafts. I had to completely rethink what I needed for this door. It slid on firmly when I tried to install, but it was just too long.
J**N
Best seal you can buy (price is great also). Installation can be tough.
This gasket is the best you can buy out there (IMHO). I find it is best used if the gap is ½” to ¾”. Less will possibly work, but you may quickly shave off the dangling legs. These can be somewhat hard to install on a 1 ¾” door as the fit is super tight (compression fit). That is why there are no holes for screws. Here is the installation that worked for me (second one installed and lessons learned). 1) The Mark: (if required. Yes, I know it is 36” and so is your door, but trust me). Lay at base of door, flush at one end and mark opposite end at end of door. Trim as below - if length is perfect, skip to 3). 2) The Trim: (lesson learned from installing as is - ¼” extended past the door edge hitting the side frame. Not fun to remove). Use anything you are skilled with: Hack saw, band saw, chain saw or whatever. Here is what I used/did. I used the heavy duty scissors to snip both upstanding legs (as far as I could). I then snipped each dangling leg at the same distance as the upstanding legs. I then used a sharp blade against a small section of 2x4 to cut the bottom – was tough and takes patience / great force. (see cut piece in pics – yes, my door is 36” and I still trimmed off about a ¼”. 3) The Install: Spray Windex on both sides of the lower sides of the door along with a shot that length of the seal (insides). Yes, Windex – as any avid dirt biker knows – lubricates for install and evaporates for a extremely tight seal (like grips on your dirt bike!) Should have bought this stock in the 70’s. 4) The Slide: Before the Windex evaporates, slide the seal from outer end of door (as if you could install any other way). It will be easy for the first 6”, then you will need a gloved (leather preferably) hand to pound it on most of the way. I got it to about to 3-4” left before my palm gave out. From there I used a block of wood (to protect the seal) and a small hammer (yea, the one shown is a tiny tike hammer, but the one I use the most) to tap the seal flush to the door. Now you are almost done. 5) The Pop: More than likely, the seal is up to the bottom of the door. I couldn’t even move my door as it was sealed to the floor. I used a rigid scraper (metal as shown – I have rigid and flexible and had to use the rigid one) sliding under the seal (gently not to damage the dangling fingers) in 6” increments and pulling up (you will hear the pop as it seats with the bottom of your door. I did this to both inside and outside of door. Key: From the Windex spray to the end was done before the Windex dried. Hopefully this helped with the installation.
R**N
I love, I bought 2 of them!
This is fabulous!!! Fit just right, after some minor adjustments. Tip: measure the door, cut the strip, then apply. I used my little jig saw because I don’t have a hand saw. The strips did tear a little but nothing some silicone won’t fix! The air draft has stopped completely. It’s the perfect thickness! No adhesive needed, I just tapped it on with a hammer.
K**S
Ok
This worked ok but didn’t stay on well
M**D
Saves money on heating n cooling costs
Ez to install and good quality. It sealed up my door w ease and no more water seeps in
V**R
Easy to install, fits well and no need to screw or nail at all.
M**K
Item as described and keeps draft out
S**E
facile à installé et tient très bien sans visse
Z**Z
Altamente recomendado. La pieza llega de un tamaño estándar a lo largo en el que se puede ajustar al tamaño de la puerta donde se desea colocar. Es fácil de cortar a la medida deseada y, una vez colocada en la puerta hace un cierre hermético que no permite el paso del polvo. La instalación en la puerta es superior sencillo.
M**A
Es muy bueno no entra ni el agua ni los bichos. Desafortunadamente con el uso se le están cayendo las bandas internas. Mira la foto.
Trustpilot
1 month ago
2 weeks ago