---
product_id: 460235933
title: "BLUM 21 Inch Drawer Slide, Full Extension, Concealed, Undermount. 563H5330B with 100 Lbs. Weight Capacity and Soft Close for 5/8 inch Thick Drawers. Including: Locking Devices (Pair)"
brand: "blum"
price: "$147.89"
currency: USD
in_stock: true
reviews_count: 8
category: "Blum"
url: https://www.desertcart.us/products/460235933-blum-21-inch-drawer-slide-full-extension-concealed-undermount-563h5330b
store_origin: US
region: United States of America
---

# 21-inch full extension 4D adjustment & soft close 100 lbs weight capacity BLUM 21 Inch Drawer Slide, Full Extension, Concealed, Undermount. 563H5330B with 100 Lbs. Weight Capacity and Soft Close for 5/8 inch Thick Drawers. Including: Locking Devices (Pair)

**Brand:** blum
**Price:** $147.89
**Availability:** ✅ In Stock

## Summary

> 🔩 Elevate your cabinetry game with Blum’s precision-engineered drawer slides!

## Quick Answers

- **What is this?** BLUM 21 Inch Drawer Slide, Full Extension, Concealed, Undermount. 563H5330B with 100 Lbs. Weight Capacity and Soft Close for 5/8 inch Thick Drawers. Including: Locking Devices (Pair) by blum
- **How much does it cost?** $147.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/460235933-blum-21-inch-drawer-slide-full-extension-concealed-undermount-563h5330b)

## 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

- • **Precision 4D Adjustment:** Fine-tune depth, height, and side alignment for a flawless fit every time.
- • **Seamless Full Extension:** Access every inch of your drawer with smooth, full 21-inch glide.
- • **Whisper-Quiet Soft Close:** Experience luxury with gentle, silent drawer closing that prevents slamming.
- • **Rock-Solid 100 lbs Capacity:** Built to handle heavy loads without compromising stability or performance.
- • **Versatile Undermount Design:** Concealed hardware for a sleek, modern look compatible with face frame or frameless cabinets.

## Overview

The BLUM 21 Inch Drawer Slide 563H5330B offers professional-grade full extension and soft-close functionality with a robust 100 lbs static load capacity. Designed for 5/8 inch thick drawers, it features four-dimensional adjustment and concealed undermount installation, ensuring a perfect, smooth fit for both face frame and frameless cabinetry. This complete pair includes locking devices and rear brackets, making it the go-to choice for millennial managers seeking durable, sleek, and high-performance drawer hardware.

## Description

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 563H fits 1/2" - 5/8" drawer side thickness. The Complete Pair is supplied with 2 563H5330B (21") runners (left and right), 2 T51.1901 locking devices (left and right), 2 rear brackets (needed for face frame only application) and screws.

Review: Prefect! - Just what I wanted
Review: Consistent quality and ease to install. - The Blum under-mount drawer slides I find are the best that I have used. I took up woodworking a couple of years ago as a hobby and decided to tackle a cabinet build got on google and started to watch videos the one I liked suggested undermount drawer slides. I researched and found the Blum were highly recommended over others I tried and they are right. I didn’t know I would do quality work when taking up woodworking so as of now I have built three bathroom cabinets and a walk in closet all totaling 35 drawers with the Blum undermount drawer slides.

## Features

- Complete pair for face frame or frameless application
- Elongated holes for depth adjustment & bottom mount holes
- Full extension and soft closing
- 100 lbs static load bearing capacity
- Four-dimensional adjustment

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B6WT4TCC |
| Best Sellers Rank | #149,830 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #310 in Cabinet & Furniture Drawer Slides |
| Brand | Blum |
| Brand Name | Blum |
| Color | Orange |
| Customer Reviews | 4.6 out of 5 stars 53 Reviews |
| Drawer Type | Side Mount |
| Finish Type | Zinc Plated |
| Finish Types | Zinc Plated |
| Item Dimensions L x W x Thickness | 21"L x 0.63"W x 0.63"Th |
| Item Weight | 6 Pounds |
| Manufacturer | Blum |
| Material | Metal |
| Material Type | Metal |
| Maximum Weight Capacity | 100 Pounds |
| Mounting Type | Under Mount |
| Product Dimensions | 21"L x 0.63"W x 0.63"Th |
| Unit Count | 2.0 Count |

## Product Details

- **Brand:** Blum
- **Color:** Orange
- **Finish Type:** Zinc Plated
- **Material:** Metal
- **Product Dimensions:** 21"L x 0.63"W x 0.63"Th

## Images

![BLUM 21 Inch Drawer Slide, Full Extension, Concealed, Undermount. 563H5330B with 100 Lbs. Weight Capacity and Soft Close for 5/8 inch Thick Drawers. Including: Locking Devices (Pair) - Image 1](https://m.media-amazon.com/images/I/71XI+DJ2Q2L.jpg)

## Questions & Answers

**Q: Why would this not work for drawers made of wood thicker than 5/8?  It's overkill but I have leftover 3/4-1" that I want to build some drawers with.**
A: The space between the runner and the vertical part that attaches the slide to the cabinet side is only wide enough to accommodate 5/8" material. Blum does make the same slide that is for maximum 3/4" material, part number 563F5330B. Hope that helps!

**Q: Are these the right slides for 24" cabinet depths using 1/2" sides, 3/4" face, frameless cabinets?**
A: Yes, these are designed for standard 24" cabinets, frameless or face frame. The slides need 21-5/8" of inside cabinet depth to work so as long as you have at least that much you are good to use these! The 563H slides are designed so maximum 5/8" drawer box sides (1/2" or 5/8").

## Customer Reviews

### ⭐⭐⭐⭐⭐ Prefect!
*by S***7 on January 18, 2026*

Just what I wanted

### ⭐⭐⭐⭐⭐ Consistent quality and ease to install.
*by S***R on January 17, 2024*

The Blum under-mount drawer slides I find are the best that I have used. I took up woodworking a couple of years ago as a hobby and decided to tackle a cabinet build got on google and started to watch videos the one I liked suggested undermount drawer slides. I researched and found the Blum were highly recommended over others I tried and they are right. I didn’t know I would do quality work when taking up woodworking so as of now I have built three bathroom cabinets and a walk in closet all totaling 35 drawers with the Blum undermount drawer slides.

### ⭐⭐⭐⭐⭐ Heavy duty.
*by T***H on November 26, 2025*

Heavy duty. Worth the money. Recommended

## Frequently Bought Together

- BLUM 21 Inch Drawer Slide, Full Extension, Concealed, Undermount. 563H5330B with 100 Lbs. Weight Capacity and Soft Close for 5/8 inch Thick Drawers. Including: Locking Devices (Pair)
- 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)
- Bundle - 12" BLUM Tandem Drawer Slides with BLUMOTION. Includes Slides 563H, Locking Devices, Rear Mounting Brackets, Screws and Instructions.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-12*