--- product_id: 57994352 title: "MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in" brand: "m-d building products" price: "฿4731" currency: THB in_stock: true reviews_count: 13 url: https://www.desertcart.co.th/products/57994352-md-building-cinch-u-shape-slide-on-under-door-seal store_origin: TH region: Thailand --- # Energy-saving seal Blocks drafts & dust 36in precision fit MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in **Brand:** m-d building products **Price:** ฿4731 **Availability:** ✅ In Stock ## Summary > 🚪 Seal the deal on comfort and savings! ## Quick Answers - **What is this?** MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in by m-d building products - **How much does it cost?** ฿4731 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/57994352-md-building-cinch-u-shape-slide-on-under-door-seal) ## Best For - m-d building products enthusiasts ## Why This Product - Trusted m-d building products brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Draft & Noise Blocker:** Keeps your space cozy and quiet, even in the busiest environments. - • **All-Weather Durability:** Robust vinyl stands strong against wear, moisture, and temperature swings. - • **Custom Fit Flexibility:** Cut-to-length design ensures a perfect seal for any standard door. - • **Energy Efficiency Booster:** Seal gaps, slash energy bills, and shrink your carbon footprint. - • **Effortless Slide-On Installation:** No tools, no hassle—just slide and seal for instant comfort. ## Overview The MD Building Cinch® U-Shape Slide-On Under Door Seal is a 36-inch brown vinyl strip designed to block drafts, dust, moisture, and noise. Its durable, flexible vinyl construction ensures long-lasting performance and energy efficiency by sealing gaps under doors without tools. Ideal for homeowners seeking an easy, cost-effective upgrade to improve insulation and reduce energy costs. ## Description MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in | Rigid and Flexible Vinyl, Blocks Drafts Moisture Dust Insects, Compression Fit, No Hardware Required, Cut-to-Length - desertcart.com Review: Easy! - I’m very pleased with this door sweep. I removed the old one, cleaned the bottom of the door, measured everything according to the instructions, and cut the new sweep to length with a hacksaw. It cut very easily. The fit was quite tight, which I consider a good thing. It took a fair amount of pounding with a hammer and a block of wood to slide it completely across the door. After installing it, I used a screwdriver at an angle for leverage to push the sweep snugly against the bottom of the door along its entire length. Once I did that, the door closed properly and the seal was excellent. I positioned the slightly rougher cut end on the hinge side, where it’s hidden. I could have smoothed it with sandpaper, but since nobody will ever see it, I didn’t bother. Overall, this was straightforward to install, feels secure, and provides a nice, tight seal. It works exactly as I hoped. We’ll see how it holds up over time, but my first impression is very positive. Review: Works as expected - This was exactly as expected. The front door of our home had a metal U-shaped guard with a rubber seal that finally broke down after over 22 years of use. I could not locate a replacement rubber seal to replace the one previously used on the bottom of the door, but did locate this product and took a chance. At first, the seal was difficult to slide onto the bottom of the door. Once we lightly coated the inside of the U with silicone grease, the seal slid on nicely with a little help from a screwdriver to get it over the snags on the door. It fits the door perfectly and actually looks better on the bottom of the door than the previous set up. It is the right thickness for the bottom of our door, does not impair the door from opening or closing, fills the gap under the door that was highly visable from the inside of the home with the light hitting the door and seems to be of excellent quality. The previous seal had 6 screws attaching it to the door from the outside. We predrilled 3 holes through this seal and attached it will three of the original screws to ensure stability over time. We did need to trim less than 1/2 inch of material off of one end to replace the previous seal, but that was easy enough to do with a hack saw. Overall, we are very happy with this replacement part and look forward to many years of use from it. ## Features - Superior Weatherproofing: Enhance your home's insulation with the Vinyl Cinch U-Shape Slide-On Under Door Seal. This innovative design effectively blocks drafts and dust, maintaining a comfortable indoor temperature year-round. Made from high-quality vinyl, it ensures a tight seal under your door, reducing energy consumption and lowering heating and cooling costs. - Durable & Long-Lasting: Crafted from robust vinyl material, the under door seal is designed to withstand daily wear and tear. Its durable construction ensures long-term performance, making it a reliable solution for door sealing needs. Regardless of varying weather conditions, this under door seal remains intact and effective, providing consistent protection and maintaining its integrity over time. - Easy Installation: The slide-on U-shape design allows for quick and simple attachment to the bottom of your door, without the need for special tools or professional assistance. This user-friendly feature makes it an excellent choice for DIY enthusiasts and homeowners looking to improve their home's efficiency. The seal fits snugly onto standard doors, ensuring a secure and seamless fit that enhances its performance. - Noise Reduction: The under door seal not only protects against drafts but also acts as an effective noise blocker. This feature is particularly beneficial for homes and offices located in busy areas, where reducing noise levels can significantly enhance comfort and productivity. By creating a sound barrier at the bottom of your door, this seal helps to minimize the intrusion of unwanted noise, ensuring a quieter and more serene indoor environment. - Energy Efficiency: Improve your home's energy efficiency with the M-D Building Products Cinch Under Door Seal. By effectively sealing gaps under doors, it prevents the loss of heated or cooled air, allowing your HVAC system to operate more efficiently. This results in lower energy bills and a reduced carbon footprint, contributing to a more sustainable and cost-effective living environment. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00PKSFEAI | | Best Sellers Rank | #855 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #24 in Door Hardware & Locks | | Brand | M-D Building Products | | Brand Name | M-D Building Products | | Color | Brown | | Customer Reviews | 4.2 out of 5 stars 7,415 Reviews | | Global Trade Identification Number | 00043374433371 | | Included Components | MD Building - 43337 | | Item Dimensions L x W | 36"L x 2"W | | Item Highlight | Rigid and Flexible Vinyl, Blocks Drafts Moisture Dust Insects, Compression Fit, No Hardware Required, Cut-to-Length | | Item Thickness | 1.75 inches | | Item Type Name | MD Building - 43337 | | Item Weight | 11.36 ounces | | Manufacturer | M-D Building Products | | Manufacturer Part Number | 43337 | | Manufacturer Warranty Description | Warranty | | Material | Vinyl | | Material Type | Vinyl | | Model Number | MD Building - 43337 | | Number of Items | 1 | | Number of Packs | 1 | | Product Dimensions | 36"L x 2"W | | Recommended Uses For Product | door | | UPC | 043374433371 | | Unit Count | 1 Count | ## Product Details - **Brand:** M-D Building Products - **Color:** Brown - **Item Thickness:** 1.75 inches - **Material:** Vinyl - **Product Dimensions:** 36"L x 2"W ## Images ![MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in - Image 1](https://m.media-amazon.com/images/I/61iepv0isGL.jpg) ![MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in - Image 2](https://m.media-amazon.com/images/I/71MbAqQgTkL.jpg) ![MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in - Image 3](https://m.media-amazon.com/images/I/81rlRtK+5gL.jpg) ![MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in - Image 4](https://m.media-amazon.com/images/I/81uHPynon5L.jpg) ![MD Building Cinch® U-Shape Slide-On Under Door Seal, Brown, 36in - Image 5](https://m.media-amazon.com/images/I/714VJRZXtML.jpg) ## Available Options This product comes in different **Color, Size, Total Product Quantity** options. ## Questions & Answers **Q: Can I cut this with a sharp scissor?** A: The scissors would have to be real sharp and have strong heavy blades like garden shears. I started the cut with a heavy, sharp kitchen knife and finished it with a small electric hand saw. Measure and cut before you put it under the door or it will be too difficult to cut after installation. This is an excellent product, so be careful not to ruin it. **Q: The first product description states the material as Aluminum, Stainless Steel. Can I assume this is incorrect and that it is 100% vinyl?** A: Yes 100% vinyl **Q: Will this stop unwanted smells, like cigarettes, from getting inside?** A: I think it will help, but I'm not sure it would be 100% effective, as cigarette smoke tends to permeate the smallest of spaces. **Q: Will this work on carpet?** A: Don't see why not. Carpet has a little more give than a metal threshold so should be fine. I have installed 2 of these on front doors of homes and worked great with metal thresholds. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Easy! *by F***S on August 3, 2026* I’m very pleased with this door sweep. I removed the old one, cleaned the bottom of the door, measured everything according to the instructions, and cut the new sweep to length with a hacksaw. It cut very easily. The fit was quite tight, which I consider a good thing. It took a fair amount of pounding with a hammer and a block of wood to slide it completely across the door. After installing it, I used a screwdriver at an angle for leverage to push the sweep snugly against the bottom of the door along its entire length. Once I did that, the door closed properly and the seal was excellent. I positioned the slightly rougher cut end on the hinge side, where it’s hidden. I could have smoothed it with sandpaper, but since nobody will ever see it, I didn’t bother. Overall, this was straightforward to install, feels secure, and provides a nice, tight seal. It works exactly as I hoped. We’ll see how it holds up over time, but my first impression is very positive. ### ⭐⭐⭐⭐⭐ Works as expected *by D***5 on September 17, 2026* This was exactly as expected. The front door of our home had a metal U-shaped guard with a rubber seal that finally broke down after over 22 years of use. I could not locate a replacement rubber seal to replace the one previously used on the bottom of the door, but did locate this product and took a chance. At first, the seal was difficult to slide onto the bottom of the door. Once we lightly coated the inside of the U with silicone grease, the seal slid on nicely with a little help from a screwdriver to get it over the snags on the door. It fits the door perfectly and actually looks better on the bottom of the door than the previous set up. It is the right thickness for the bottom of our door, does not impair the door from opening or closing, fills the gap under the door that was highly visable from the inside of the home with the light hitting the door and seems to be of excellent quality. The previous seal had 6 screws attaching it to the door from the outside. We predrilled 3 holes through this seal and attached it will three of the original screws to ensure stability over time. We did need to trim less than 1/2 inch of material off of one end to replace the previous seal, but that was easy enough to do with a hack saw. Overall, we are very happy with this replacement part and look forward to many years of use from it. ### ⭐⭐⭐⭐ Solid value if your door meets the specs *by P***S on July 22, 2021* My expectations weren't very high for a cheap sweep but I was rather pleased with what I got and the results. The material (vinyl) in the photos make the thing looks somewhat hard/dry/plastic-y so I was somewhat uncertain how well it would work, but it's actually nicely balanced. The walls of the sweep that adhere to the door are thicker and more rigid to create a very tight grip while the fins are thinner and bend more easily, vinyl soft and durable to create a good seal. One side of my door has a 1/2" gap and the hinge side has a much much narrower gap but it adjusts on both sides perfectly well to create a perfect seal. There is zero light leaking in from outside now. If you have a standard 1 3/4" door this thing definitely installs without adhesive or screws and can maintain grip. This might have to do with what surface your door has - mine has a coat of latex paint. In fact, the thing is so tight that installation is much easier with a rubber mallet. Sliding it in manually is probably going to be an effort so be aware. Aside from that, installation is a breeze. Measure twice, cut once. Also, once you actually install the thing, you might run into some minor issues with the door not closing if you for example, push the sweep a tad too deep and it bumps into the hinge. Recommend having a utility knife or clippers to do some fine trimming at the ends and this can clean up these sorts of issues. Glad I went with this product. ## Frequently Bought Together - M-D Building Products 43337 Vinyl Cinch® U-Shape Slide-On Under Door Seal, Easy-to-Install, Energy-Saving, Weatherproof Seal for Doors, Effective Draft Blocker, Ideal for Home (36 Inch, Brown) - Kerf Weather Stripping Door Seal for Large Gap and Easy Installation (40 Feet, White) - Weather Stripping Door Seal Strip - Soundproof Q-Shaped Foam for Exterior Door Frame, Large Gap Seal, Noise Cancelling, Easy to Install (Black, 26FT) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/57994352-md-building-cinch-u-shape-slide-on-under-door-seal](https://www.desertcart.co.th/products/57994352-md-building-cinch-u-shape-slide-on-under-door-seal) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-11-07*