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The MD Building Products 43337 U-Shape Under Door Seal is a 36-inch long, 1.75-inch thick vinyl strip designed to slide onto standard exterior doors without screws or drilling. It provides a durable, flexible barrier that blocks drafts, moisture, dust, and insects, helping reduce energy loss and improve indoor comfort with a customizable fit.










| Asin | B00PKSFEAI |
| Best Sellers Rank | #384 in Weather Stripping |
| Date First Available | 4 March 2015 |
| Department | Unisex-Adult |
| Is Discontinued By Manufacturer | No |
| Item Model Number | MD Building - 43337 |
| Manufacturer | M-D Building Products |
| Product Dimensions | 5.08 x 5.84 x 92.71 cm; 322.05 g |
User
Cut to size and you're good to go.
Perfect under door seal. Just make sure to measure and cut before installation or it will be a pain.
User
Draft free
Item as described and keeps draft out
User
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.
User
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.
User
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.
User
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
3 days ago