--- product_id: 453207846 title: "BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair)" brand: "blum" price: "฿5612" currency: THB in_stock: true reviews_count: 8 category: "Blum" url: https://www.desertcart.co.th/products/453207846-blum-21-inch-undermount-drawer-slide-soft-close-full-extension store_origin: TH region: Thailand --- # 21.5 inches long Concealed design 100 lbs capacity BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) **Brand:** blum **Price:** ฿5612 **Availability:** ✅ In Stock ## Summary > 🔧 Elevate Your Storage Game with Blum's Precision Engineering! ## Quick Answers - **What is this?** BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) by blum - **How much does it cost?** ฿5612 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/453207846-blum-21-inch-undermount-drawer-slide-soft-close-full-extension) ## Best For - blum enthusiasts ## Why This Product - Trusted blum brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Full Extension Access:** Maximize your storage potential with complete drawer access. - • **Robust Weight Support:** Confidently store up to 100 lbs without worry. - • **Smooth Soft-Close Mechanism:** Experience a gentle, noise-free closure every time. - • **Easy Side-to-Side Adjustment:** Achieve the perfect fit with included locking devices. - • **Versatile Installation Options:** Compatible with both frameless and face frame cabinets. ## Overview The Blum 21 Inch Undermount Drawer Slide (Model: 563F5330B) is engineered for durability and ease of use, supporting up to 100 lbs with a soft-close feature and full extension access. Ideal for 3/4 inch thick drawers, this pair includes all necessary components for a seamless installation in both frameless and face frame cabinets. ## Description Discover Blum Tandem plus Blumotion (Soft-Close) Complete Pair. With 100 lbs static load-bearing capacity, full extension and soft closing. The drawer slide has elongated holes for depth adjustment & bottom mount holes that allow you to mount the slide to a shelf or the bottom of the cabinet. Blum Tandem 563F fits 3/4" drawer side thickness. The Complete Pair is supplied with 2 563F5330B runners (left and right), 2 T51.1901 locking devices (left and right), 2 rear brackets (needed for face frame only application) and screws. Review: Excellent, well made and relatively easy to install - I watched a lot of YouTube videos on how to install these. There are a lot of suggestions out there. I have one cabinet that has four different drawer sizes stacked, and the cabinet is only 18 inches wide. Countertops were already installed when I decided to buy these, so getting inside the cabinet Was nearly impossible. To solve the problem, I ended up, taking all the drawers out, cutting two pieces of one by three an inch less than the height of the floor of the cabinet to the countertop, please sing it in front and just behind the cabinet face with the four drawer holes and tracing the bottom left and right corners of where the drawers go. I compensated a quarter of an inch and attached the back L brackets before screwing the one by threes vertically into the back of the cabinets. I pre-drilled and started three drywall screws in the wood, then place them vertically at the back of the cabinet. This meant I only had to screw in six screws at the back of the cabinet. Worked beautifully. Didn’t see the suggestion on any of the websites I checked. I then screwed the glides into the bottom corners of the face after slipping them onto the L brackets. Every single, one of them worked, all of my drawers are aligned perfectly and the mechanism that screws into the bottom of the drawers to help a line are fantastic. Very happy with this product, they are expensive but they are worth it if you want soft closed drawers. My drawers are now full extension, quiet and work perfectly. My husband and I installed about 15 pair in two days. Review: Easy replacement under mount drawer slide - I loved how sturdy these slides looked compared to the ones I was replacing. These slides were also very quiet. I even contemplated spending more money to replace the other slides I have but they are not yet broken and these were already a pricey replacement. But I really did pay the premium for the quality slides I now have. This is a great product and the installation was easy because it was a replacement of an under mount drawer slide. This was 1/2” larger when I measured but came up to the same size as my previous drawer slides. Will buy again if needed! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5FH2D4J | | Best Sellers Rank | #79,365 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #165 in Cabinet & Furniture Drawer Slides | | Brand Name | Blum | | Color | Orange | | Customer Reviews | 4.5 4.5 out of 5 stars (61) | | Drawer Type | Under Mounted Slide | | Finish Types | Zinc Plated | | Item Dimensions L x W x Thickness | 21"L x 21"W x 0.75"Th | | Item Weight | 7 Pounds | | Manufacturer | Blum | | Manufacturer Part Number | 563F5330B-SSlocking | | Material Type | Alloy Steel | | Maximum Weight Capacity | 100 Pounds | | Model Number | 563F5330B-SSlocking | | Mounting Type | Under Mount | | Number of Items | 2 | | Unit Count | 2.0 Count | ## Product Details - **Brand:** Blum - **Color:** Orange - **Finish Type:** Zinc Plated - **Material:** Alloy Steel - **Product Dimensions:** 21"L x 21"W x 0.75"Th ## Images ![BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) - Image 1](https://m.media-amazon.com/images/I/71A+enDbklL.jpg) ![BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) - Image 2](https://m.media-amazon.com/images/I/71GXQKnBgkL.jpg) ![BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) - Image 3](https://m.media-amazon.com/images/I/71g9xJAhEpL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent, well made and relatively easy to install *by S***. on December 12, 2024* I watched a lot of YouTube videos on how to install these. There are a lot of suggestions out there. I have one cabinet that has four different drawer sizes stacked, and the cabinet is only 18 inches wide. Countertops were already installed when I decided to buy these, so getting inside the cabinet Was nearly impossible. To solve the problem, I ended up, taking all the drawers out, cutting two pieces of one by three an inch less than the height of the floor of the cabinet to the countertop, please sing it in front and just behind the cabinet face with the four drawer holes and tracing the bottom left and right corners of where the drawers go. I compensated a quarter of an inch and attached the back L brackets before screwing the one by threes vertically into the back of the cabinets. I pre-drilled and started three drywall screws in the wood, then place them vertically at the back of the cabinet. This meant I only had to screw in six screws at the back of the cabinet. Worked beautifully. Didn’t see the suggestion on any of the websites I checked. I then screwed the glides into the bottom corners of the face after slipping them onto the L brackets. Every single, one of them worked, all of my drawers are aligned perfectly and the mechanism that screws into the bottom of the drawers to help a line are fantastic. Very happy with this product, they are expensive but they are worth it if you want soft closed drawers. My drawers are now full extension, quiet and work perfectly. My husband and I installed about 15 pair in two days. ### ⭐⭐⭐⭐⭐ Easy replacement under mount drawer slide *by R***N on December 19, 2024* I loved how sturdy these slides looked compared to the ones I was replacing. These slides were also very quiet. I even contemplated spending more money to replace the other slides I have but they are not yet broken and these were already a pricey replacement. But I really did pay the premium for the quality slides I now have. This is a great product and the installation was easy because it was a replacement of an under mount drawer slide. This was 1/2” larger when I measured but came up to the same size as my previous drawer slides. Will buy again if needed! ### ⭐⭐⭐⭐⭐ They really work well . *by S***R on February 19, 2025* I have built several cabinets with these and have had no problems. They are worth trying just check there web site and figure which ones will work for you. ## Frequently Bought Together - BLUM 21 Inch Undermount Drawer Slide. (Soft Close, Full Extension, Concealed). Model: 563F5330B (100 Lbs. Weight Capacity), for 3/4 inch Thick Drawers. (Pair) - Blum T65.9000 Tandem Plus Tool Set for Drawer Slides Template --- ## 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/453207846-blum-21-inch-undermount-drawer-slide-soft-close-full-extension](https://www.desertcart.co.th/products/453207846-blum-21-inch-undermount-drawer-slide-soft-close-full-extension) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-04-28*