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The M-D Building Products 43336 Vinyl Cinch U-Shape Under Door Seal is a 36-inch, white vinyl draft stopper designed for easy slide-on installation without tools. It effectively blocks drafts, moisture, and noise, enhancing home energy efficiency and comfort while reducing HVAC costs. Durable and weatherproof, it fits standard doors and can be trimmed for a perfect fit, making it a reliable, long-lasting solution for year-round insulation.











| ASIN | B00P4QHJNG |
| Best Sellers Rank | #36,458 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #317 in Weather Stripping |
| Brand | M-D Building Products |
| Brand Name | M-D Building Products |
| Color | White |
| Colour | White |
| Customer Reviews | 4.2 out of 5 stars 6,991 Reviews |
| Global Trade Identification Number | 00043374433364 |
| Included Components | DOOR SEAL CINCH 36"WHT by M-D BUILDING PRODUCTS MfrPartNo 43336 |
| Item Dimensions L x W | 91.4L x 5.1W centimeters |
| Item Thickness | 1.75 Inches |
| Item Type Name | DOOR SEAL CINCH 36"WHT by M-D BUILDING PRODUCTS MfrPartNo 43336 |
| Item Weight | 318 g |
| Item thickness | 1.75 Inches |
| Manufacturer | M-D Building Products |
| Manufacturer Part Number | 43336 |
| Material | Vinyl |
| Material Type | Vinyl |
| Model Number | MD Building - 43336 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Product dimensions | 91.4L x 5.1W centimeters |
| Recommended Uses For Product | Under Door |
| Recommended uses for product | Under Door |
| UPC | 043374433364 |
| Unit Count | 1 Count |
M**K
Draft free
Item as described and keeps draft out
L**A
Great product!
So easy - slides on to bottom of door (Use a hammer to tap it along, into place). It was a little too long - Instructions recommend trimming with saw, but I managed to use a kitchen knife to make a groove, and then I twisted off the extra plastic with a wrench. Just be innovative! Now door closes perfectly and no gap under the door. Once I took off my old door stop piece to replace with this new one, I saw why there was a gap - the old one had all the vinyl flaps worn off. Seems we need to replace every 3 years or so. Worth it for 20$ and so easy! This one has lots of vinyl flaps to keep the cold out.
Z**Z
Fácil de adaptar y colocar
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
Bueno al principio.
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.
A**E
Stays put and blocks the draft.
Installed 10 days ago. Easy to cut its length. Stays in place. Tight for our gap - makes swinging the door difficult. But it stopped the air coming in.
Trustpilot
1 month ago
1 day ago