---
product_id: 47734015
title: "TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits)"
brand: "blum"
price: "4021 Lei"
currency: RON
in_stock: true
reviews_count: 9
category: "Blum"
url: https://www.desertcart.ro/products/47734015-tandem-plus-blumotion-concealed-undermount-drawer-slides-runners-kit-21
store_origin: RO
region: Romania
---

# 21-inch full extension Integrated BLUMOTION soft-close Tool-free height & tilt adjustment TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits)

**Brand:** blum
**Price:** 4021 Lei
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your cabinetry game with Blum: smooth, silent, and seriously sleek.

## Quick Answers

- **What is this?** TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) by blum
- **How much does it cost?** 4021 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/47734015-tandem-plus-blumotion-concealed-undermount-drawer-slides-runners-kit-21)

## 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

- • **Built to Endure:** Steel construction supports up to 100 lbs, perfect for heavy-duty kitchen or custom cabinetry needs.
- • **Maximize Every Inch:** Full 21-inch extension for total drawer access—never lose track of your essentials.
- • **Effortless Precision:** DIY-friendly, tool-free height and tilt adjustments for flawless alignment and a pro finish every time.
- • **Whisper-Quiet Luxury:** BLUMOTION soft-close tech ensures smooth, silent drawer closing—no more slams, just sophistication.
- • **Complete Installation Kit:** Includes 6 kits with locking devices, rear brackets, and screws—everything you need to upgrade instantly.

## Overview

The Blum TANDEM plus BLUMOTION 21-inch concealed undermount drawer slides deliver full-extension access with integrated soft-close technology, supporting up to 100 lbs. Designed for wood drawers in kitchens, bathrooms, and custom projects, these steel slides offer tool-free height and tilt adjustments for perfect alignment. Each kit includes all necessary mounting hardware, combining durable craftsmanship with quiet, smooth operation backed by a limited lifetime warranty.

## Description

Upgrade your cabinetry with Blum TANDEM plus BLUMOTION concealed undermount runners, also called drawer slides or glides, designed for a clean look and smooth performance. These 21-inch drawer slides provide full-extension access so you can reach every item and maximize storage space. Perfect for kitchens, bathrooms and custom furniture projects. Each kit includes everything you need: a pair of left and right drawer slides, locking devices, rear mounting brackets and screws. Enjoy the luxury of soft close every time. Integrated BLUMOTION technology ensures drawers close gently and quietly, protecting your cabinetry and eliminating slamming. Optional bottom mount holes provide flexibility for attaching runners to the cabinet bottom. Installation is simple and tool-free height, side and tilt adjustments let you fine-tune drawer alignment for professional results. Before purchasing, check your measurements to ensure a perfect fit. TANDEM slides follow the standard American cabinet depth system: an 21-inch runner pairs with an 21-inch drawer length. For face frame cabinets using rear mounting brackets, your inside cabinet depth should be at least 21-15/16 inches and no more than 23-19/32 inches. For frameless cabinets, only the minimum depth matters. These slides are built for wood drawers and support up to 100 pounds, making them ideal for deep or wide drawers that hold heavy items. TANDEM delivers durability and smooth operation for years to come. Proudly manufactured in our North Carolina facility using high-quality domestic and European components, Blum combines innovation with craftsmanship you can trust. Backed by Blum’s limited lifetime warranty.

Review: Blum undermount drawer slides - Great quality, very smooth & pretty easy to install
Review: Great slides - Wish they had come with the right screws - Pros: These Blum slides are worth the money, and this was a good deal on six of them. So much cooler than side-mount drawer slides. The slides are reasonably forgiving in terms of alignment. The action is smooth, and the self-close is a wonder of engineering design. I could stare at them closing all day. Unavoidable: As for installing the slides, cabinets are tight spaces, and it would help to be a Hobbit. Cons: The packaging used to send these was, ahem, minimal. Scarcely thicker than a shoebox. Six of these weigh about 40-50 lbs, so the box was nearly falling apart when it arrived. I would suggest a few extra pieces of cardboard. I mounted these directly to the 'floor' of the cabinet, and as such, I needed the #6 Truss head screws ...which did not come with the kit. A quick trip to the hardware store solved that, but it seems like an oversight. When I ordered a single pair of these slides from another vendor, it came with the truss head screws. It was a small disappointment in an otherwise good experience.

## Features

- 6 Kits Includes 6 pairs of drawer slides + 6L & 6R locking devices + 12 rear mounting brackets + screws; Compatible with face frame and frameless cabinets
- Concealed undermount runner system for wood drawers with full extension access; ideal for kitchens, bathrooms and custom projects
- Integrated BLUMOTION soft close ensures drawers close gently and quietly every time, protecting your cabinets and giving you a premium experience
- DIY-friendly installation with tool-free height and tilt adjustments lets you fine-tune the position of your drawer fronts for perfect alignment and professional results
- The Blum Difference: Family-owned since 1952. Many Blum products are made in the USA with domestic and European components, delivering innovative cabinet solutions and quality you can trust

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07519F2QJ |
| Best Sellers Rank | #12,287 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #15 in Cabinet & Furniture Drawer Slides |
| Brand | Blum |
| Brand Name | Blum |
| Color | Zinc & Orange |
| Customer Reviews | 4.3 out of 5 stars 449 Reviews |
| Drawer Type | Under Mount |
| Finish Type | Zinc Plated |
| Finish Types | Zinc Plated |
| Global Trade Identification Number | 00632317423205 |
| Item Weight | 39.7 Pounds |
| Manufacturer | Blum |
| Manufacturer Part Number | 563H5330B |
| Material | Zinc |
| Material Type | Zinc |
| Maximum Weight Capacity | 100 Pounds |
| Model Number | 563H5330B |
| Mounting Type | Under Mount |
| Number of Items | 6 |
| UPC | 632317423205 |
| Unit Count | 6.0 Count |
| Weight Limit | 100 Pounds |

## Product Details

- **Brand:** Blum
- **Color:** Zinc & Orange
- **Finish Type:** Zinc Plated
- **Material:** Zinc
- **Mounting Type:** Under Mount

## Images

![TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) - Image 1](https://m.media-amazon.com/images/I/81pQE+upx-L.jpg)
![TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) - Image 2](https://m.media-amazon.com/images/I/81ZLwVkGYEL.jpg)
![TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) - Image 3](https://m.media-amazon.com/images/I/81ks5qh2ODL.jpg)
![TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) - Image 4](https://m.media-amazon.com/images/I/713GCQVw9yL.jpg)
![TANDEM plus BLUMOTION Concealed Undermount Drawer Slides (Runners) Kit, 21-Inch, Full Extension, Soft-Close, Steel, 100 lb. Load Capacity for Wood Drawers (6 Kits) - Image 5](https://m.media-amazon.com/images/I/61DA7L8i-NL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Enough for six drawers?**
A: are we sure that it actually does 6 drawers, not 3? It says 6 slides....

**Q: Do these slides have a feature to make them hold the fully opened position (like a detent)?**
A: When the drawer is pulled fully open it will remain in place, but there is no locking mechanism to keep them from being closed.

**Q: Where are these made?**
A: The company originated in Austria.
Products are made in the US and
others.

**Q: Are they returnable if they don't fit ?**
A: You pay return shipping and a 20% Restocking Fee.  OUCH!!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Blum undermount drawer slides
*by P***A on April 24, 2026*

Great quality, very smooth & pretty easy to install

### ⭐⭐⭐⭐⭐ Great slides - Wish they had come with the right screws
*by D***N on March 28, 2024*

Pros: These Blum slides are worth the money, and this was a good deal on six of them. So much cooler than side-mount drawer slides. The slides are reasonably forgiving in terms of alignment. The action is smooth, and the self-close is a wonder of engineering design. I could stare at them closing all day. Unavoidable: As for installing the slides, cabinets are tight spaces, and it would help to be a Hobbit. Cons: The packaging used to send these was, ahem, minimal. Scarcely thicker than a shoebox. Six of these weigh about 40-50 lbs, so the box was nearly falling apart when it arrived. I would suggest a few extra pieces of cardboard. I mounted these directly to the 'floor' of the cabinet, and as such, I needed the #6 Truss head screws ...which did not come with the kit. A quick trip to the hardware store solved that, but it seems like an oversight. When I ordered a single pair of these slides from another vendor, it came with the truss head screws. It was a small disappointment in an otherwise good experience.

### ⭐⭐⭐⭐⭐ Perfect
*by W***D on April 28, 2026*

When my old drawer slides broke, I was hoping to find an exact match and I did. These took me 10 minutes to install and they were perfect. And they operate flawlessly.

## Frequently Bought Together

- Blum 563H5330B 21" Tandem Drawer Slides Plus Blumotion Complete Kit. with Runners 563H, Locking Devices, Rear Mounting Brackets and Screws (for Face Frame Or Frameless Application), Zinc (Pack of 6)
- BLUM Tandem Plus BLUMOTION Drawer Slides Complete Pair, with Runners 563H, Locking Devices, Rear Mounting Brackets and Screws (for face Frame or Frameless Application) 21 Inch
- JIG IT Undermount Drilling Guide - Durable ABS Plastic Drill Angle Guide w/Steel Inserts - Drill Guide Jig for Blum Tandem & Drawer Slide – Ideal Woodworking Tools Includes Drill Bits, Collars & More

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-07-13*