--- product_id: 447134738 title: "6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack" brand: "polar tangro" price: "13872 kr" currency: ISK in_stock: true reviews_count: 8 category: "Polar Tangro" url: https://www.desertcart.is/products/447134738-6-inch-3d-adjustable-invisible-door-hinges-heavy-duty-concealed store_origin: IS region: Iceland --- # 88 lbs load capacity 180° silent smooth swing 3D ±3mm vertical, ±2mm horizontal, ±1mm depth adjust 6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack **Brand:** polar tangro **Price:** 13872 kr **Availability:** ✅ In Stock ## Summary > 🚪 Elevate your space with invisible strength and flawless motion! ## Quick Answers - **What is this?** 6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack by polar tangro - **How much does it cost?** 13872 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/447134738-6-inch-3d-adjustable-invisible-door-hinges-heavy-duty-concealed) ## Best For - polar tangro enthusiasts ## Why This Product - Trusted polar tangro brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Invisible Elegance:** Seamlessly concealed hinges for a sleek, minimalist door profile that elevates any modern interior. - • **Heavy-Duty Durability:** Crafted from high-density zinc alloy, engineered to support doors up to 88 lbs with zero sag or wear. - • **Whisper-Quiet Operation:** Built-in rubber bearings absorb vibration and friction for a smooth, silent 180° door swing experience. - • **Precision 3D Calibration:** Effortlessly fine-tune door alignment in three dimensions without removing the door—perfect fit guaranteed. - • **Universal & Ready-to-Install:** Reversible design fits all door swings with included screws and hex wrenches—professional finish assured. ## Overview Polar Tangro’s 6-Inch 3D Adjustable Invisible Door Hinges combine heavy-duty zinc alloy construction with advanced 3D calibration, supporting up to 88 lbs per pair. Designed for interior wood doors over 35mm thick, these concealed hinges offer a full 180° silent swing and a minimalist aesthetic that disappears when closed. The reversible design and included hardware make them versatile for any door orientation, delivering professional-grade durability and precision alignment for a flawless, modern finish. ## Description Polar Tangro 6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - desertcart.com Review: Great looking, sturdy high-end door hardware - If you're looking for an application with hidden hinges, these work well and look great. Besides being completely invisible when installed, they look good when exposed with the door open and come with covers to hide the screws. They can handle fairly heavy doors (see specifications). As with lots of high-end hardware, the dimensions are metric. The hinge is 25mm wide, just short of an inch. Installation isn't easy, but it's what is expected from this type of hardware. There are good instructions in the box. Cutting/routing the holes to recess the hinges can be a challenge, as each hole has 2 different depths and curved ends. I would definitely make a template if installing several of these. I did a practice installation on some scrap and would recommend doing one before cutting into an expensive door and frame. If your door jamb is standard 1"x X wood, there may not be much wood left to screw the hinge in, as the recesses are quite deep. The inner recess will go all the way through the jamb. On the jamb side I'd consider replacing the provided screws with longer screws that extend into the framing. The hinges are highly adjustable to change the gap and horizontal and vertical alignment. It may take a bit of practice to get them right, but they give you the hex wrenches in the kit to make the adjustments. If you're want a really tight fit, remember that wood will expand and contract with moisture and temperature, so make appropriate allowances in the fit. Also be aware that due to the width of the hinges, they'll need to be installed indoors 1-3/8" thick or greater. Review: Amazing quality. Great value for the money. - These are just as good as the options that are 3x the money. They are extremely heavy duty and smooth. I'm using them on a hidden bookshelf door that might have a couple hundred pounds on them at any given point. My one knock is on installation. I wasn't expecting it to come with an installation jig or anything. And I know the measurements are in the product listing pictures ....but at a printable template or guidance on a template would be great. As these type of recessed hinges are notoriously difficult to get perfect. Luckily I was able to pull it off without wasting any material. ## Features - 【Durable Zinc Alloy Structure】 Precision-engineered with a high-density zinc alloy core for superior durability and corrosion resistance. Built to withstand long-term use, the robust four-axis mechanical design provides a reliable 88 lbs (40kg) load capacity per pair, ensuring your doors remain sturdy, sag-free, and secure for years to come. - 【Effortless 3-Way Calibration】 Master your door alignment with our advanced 3D adjustment system. Fine-tune your door position vertically (±3.0mm), horizontally (±2.0mm), and in-depth (±1.0mm) without removing the door. This professional-grade flexibility guarantees a perfect, flush fit even for heavy-duty interior doors. - 【180° Silent & Smooth Swing】 Maximize your room layout with a full 180-degree wide opening angle. Engineered with built-in high-density rubber bearings, these hinges effectively absorb vibration and minimize metal-on-metal friction. This ensures a whisper-quiet, fluid motion every time you open or close your door, providing a premium, refined tactile experience. - 【Minimalist Concealed Aesthetics】 Achieve a sleek, modern look with hinges that vanish entirely when the door is closed. Designed for doors over 35mm thick, our 6 x 2.5 x 1-inch hinges create a seamless profile, making them the preferred choice for hidden doors, minimalist wall integration, and high-end cabinetry. - 【Universal Fit & Easy Setup】 Designed for versatility, these reversible hinges work perfectly for left, right, inward, or outward swinging doors. Includes 2 hinges, 16 reinforced mounting screws, and 3 hex wrenches (4mm, 3mm, 2.5mm). Note: Professional installation or pre-drilling is recommended for optimal results. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09ZL2G6MD | | Best Sellers Rank | #270,564 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,068 in Door Hinges | | Brand | Polar Tangro | | Brand Name | Polar Tangro | | Color | Silver - 2pcs | | Customer Reviews | 4.2 out of 5 stars 43 Reviews | | Finish Type | Brushed | | Finish Types | Brushed | | Hole Count | 2 | | Included Components | 2 Pack 6 Inch Invisible Hinges | | Item Dimensions L x W | 6.88"L x 2.75"W | | Manufacturer | Polar Tangro | | Manufacturer Part Number | TOLHO-6HidHing-2 | | Material | Aluminum, Zinc | | Material Type | Aluminum, Zinc | | Maximum Weight Capacity | 88 pounds | | Model Number | TOLHO-6HidHing-2 | | Mounting Type | Door Mount | | Product Dimensions | 6.88"L x 2.75"W | ## Product Details - **Brand:** Polar Tangro - **Color:** Silver - 2pcs - **Finish Type:** Unfinished - **Hole Count:** 2 - **Manufacturer:** Polar Tangro - **Material:** Aluminum, Zinc - **Mounting Type:** Door Mount - **Product Dimensions:** 6.88"L x 2.75"W - **Weight Limit:** 88 Pounds ## Images ![6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - Image 1](https://m.media-amazon.com/images/I/81bJPB6kmFL.jpg) ![6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - Image 2](https://m.media-amazon.com/images/I/81PRvJt0PvL.jpg) ![6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - Image 3](https://m.media-amazon.com/images/I/810t1eR+csL.jpg) ![6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - Image 4](https://m.media-amazon.com/images/I/81SB7gIfIcL.jpg) ![6-Inch 3D Adjustable Invisible Door Hinges, Heavy-Duty Concealed Hinge for Interior Wood Doors, 180° Opening, Zinc Alloy, 88 lbs Capacity, Brushed Silver, 2-Pack - Image 5](https://m.media-amazon.com/images/I/81onErS-D6L.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Do they come with instructions and templates?** A: Our product page has a picture of installation instructions, the product also includes installation instructions **Q: Can these hinges be used with a hollow core door?** A: I'm not an expert but given the weight of the hinge and the placement, you would have to find a way to mount a block inside the hollow core which seems like it would be a ton of work unless you were building a hollow core door or rebuilding it and had access to mount it to the interior of the door edge. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great looking, sturdy high-end door hardware *by D***R on November 13, 2023* If you're looking for an application with hidden hinges, these work well and look great. Besides being completely invisible when installed, they look good when exposed with the door open and come with covers to hide the screws. They can handle fairly heavy doors (see specifications). As with lots of high-end hardware, the dimensions are metric. The hinge is 25mm wide, just short of an inch. Installation isn't easy, but it's what is expected from this type of hardware. There are good instructions in the box. Cutting/routing the holes to recess the hinges can be a challenge, as each hole has 2 different depths and curved ends. I would definitely make a template if installing several of these. I did a practice installation on some scrap and would recommend doing one before cutting into an expensive door and frame. If your door jamb is standard 1"x X wood, there may not be much wood left to screw the hinge in, as the recesses are quite deep. The inner recess will go all the way through the jamb. On the jamb side I'd consider replacing the provided screws with longer screws that extend into the framing. The hinges are highly adjustable to change the gap and horizontal and vertical alignment. It may take a bit of practice to get them right, but they give you the hex wrenches in the kit to make the adjustments. If you're want a really tight fit, remember that wood will expand and contract with moisture and temperature, so make appropriate allowances in the fit. Also be aware that due to the width of the hinges, they'll need to be installed indoors 1-3/8" thick or greater. ### ⭐⭐⭐⭐⭐ Amazing quality. Great value for the money. *by J***R on December 12, 2023* These are just as good as the options that are 3x the money. They are extremely heavy duty and smooth. I'm using them on a hidden bookshelf door that might have a couple hundred pounds on them at any given point. My one knock is on installation. I wasn't expecting it to come with an installation jig or anything. And I know the measurements are in the product listing pictures ....but at a printable template or guidance on a template would be great. As these type of recessed hinges are notoriously difficult to get perfect. Luckily I was able to pull it off without wasting any material. ### ⭐⭐⭐⭐ Difficult install but works *by D***S on November 23, 2023* Hard to install if you have not clue what to do but I built a frame as a hideaway door and it wasn't under the best circumstances. But the door I built weights 70-80 lbs and it's holding. ## Frequently Bought Together - Invisible Door Hinges (2 pcs) -6 Inch Sliver Hidden Hinges for Doors, 3 Way Adjustable & 180 Deg Swing Invisible Hinge, Heavy-Duty Zinc Alloy Concealed Door Hinges 88Lbs Load-Bearing - Precision Lock PLS-24 PRO Concealed Magnetic Catch, Silver - NHN1628U-M Concealed Door Closer, Non-Handed, Heavy-Duty, Up to 88lbs. Doors, Non-Compatible with Larson Door, Dual Speed Control, Invisible Door Closer --- ## 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.is/products/447134738-6-inch-3d-adjustable-invisible-door-hinges-heavy-duty-concealed](https://www.desertcart.is/products/447134738-6-inch-3d-adjustable-invisible-door-hinges-heavy-duty-concealed) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-09-06*