--- product_id: 807602586 title: "BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect)" brand: "zrizaura" price: "€ 107.21" currency: EUR in_stock: true category: "Zrizaura" url: https://www.desertcart.sk/products/807602586-billy-height-extension-unit-40x28x35-cm-top-extension-shelf-bookcase store_origin: SK region: Slovakia --- # Space-saving vertical storage 40x28x35 cm compact size Top extension for BILLY bookcases BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) **Brand:** zrizaura **Price:** € 107.21 **Availability:** ✅ In Stock ## Summary > 📚 Elevate your storage game—because your space deserves the upgrade! ## Quick Answers - **What is this?** BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) by zrizaura - **How much does it cost?** € 107.21 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/807602586-billy-height-extension-unit-40x28x35-cm-top-extension-shelf-bookcase) ## Best For - zrizaura enthusiasts ## Why This Product - Trusted zrizaura brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Modern Oak Finish:** Elevate your space with a warm, contemporary oak effect that blends effortlessly with any décor. - • **Effortless Assembly:** Flat-packed with clear instructions and all fittings included for quick, hassle-free setup. - • **Versatile & Adaptive:** Ideal for living rooms, offices, or bedrooms—expand your storage as your lifestyle evolves. - • **Seamless Compatibility:** Designed exclusively as a top extension for BILLY units, ensuring a perfect fit and cohesive look. - • **Maximize Your Vertical Space:** Add 35 cm of sleek, oak-effect height to your existing BILLY bookcase for a stylish storage boost. ## Overview The BILLY Height Extension Unit (40x28x35 cm) is a stylish, space-saving add-on designed to increase vertical storage on BILLY bookcases. Crafted from engineered wood with a modern oak effect finish, it fits seamlessly atop existing units, perfect for living rooms, offices, or bedrooms. Easy to assemble and adapt, it transforms your shelving into a versatile, organized solution that grows with your needs. ## Description Add an extension unit to BILLY bookcase to maximise your vertical storage space and make efficient use of the floor area. This creates a new solution and more storage when your needs and life change. ## Features - Product Dimensions: Width: 40 cm, Depth: 28 cm, Height: 35 cm providing compact vertical storage extension - Space-Saving Design: Extension unit maximizes vertical storage space while making efficient use of floor area in your home. - Compatible Add-On: Designed as a top extension shelf specifically for BILLY bookcase and shelving units. - Versatile Storage Solution: Suitable for living room, office, and home organisation needs when your storage requirements change. - Adaptable Organisation: Creates additional storage capacity that adapts to your evolving lifestyle and changing needs. - Assembly Required: Supplied flat packed with clear step-by-step instructions and all necessary fittings for quick, secure and hassle-free assembly onto a compatible BILLY bookcase. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0GGJ5CBW5 | | Best Sellers Rank | 1,552,191 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 1,803 in Living Room Bookcases | | Brand Name | ZRIZAURA | | Colour | Oak Effect | | Finish Type | Oak effect | | Furniture Finish | Oak effect | | Included Components | 1 Height extension unit | | Is Assembly Required? | Yes | | Item Depth | 28 centimeters | | Item Dimensions | 28 x 40 x 35 centimetres | | Item Dimensions D x W x H | 28D x 40W x 35H centimetres | | Item Shape | Rectangular | | Item Weight | 4.23 Kilograms | | Manufacturer | ZRIZAURA | | Manufacturer Part Number | ZR451 | | Material Type | Engineered Wood | | Model Name | ZRIZAURA | | Model Number | ZR451 | | Mounting Type | Freestanding | | Number of Items | 1 | | Room Type | Bedroom, Dining Room, Hallway, Living Room, Office | | Shelf Type | Height Extension Unit | | Size | 40x28x35 cm | | Special Features | Space Saving | | Style Name | Modern | | Unit Count | 1.0 count | ## Product Details - **Brand:** ZRIZAURA - **Finish type:** Oak effect - **Material:** Engineered Wood - **Mounting type:** Freestanding - **Product dimensions:** 28D x 40W x 35H centimetres - **Room type:** Bedroom, Dining Room, Hallway, Living Room, Office - **Shape:** Rectangular - **Shelf type:** Height Extension Unit - **Special feature:** Space Saving - **Style:** Modern ## Images ![BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) - Image 1](https://m.media-amazon.com/images/I/61FgTNbCasL.jpg) ![BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) - Image 2](https://m.media-amazon.com/images/I/61bJtoKsSmL.jpg) ![BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) - Image 3](https://m.media-amazon.com/images/I/21gAHnBZ3SL.jpg) ![BILLY Height Extension Unit 40x28x35 cm – Top Extension Shelf for Bookcase & Shelving Units, Space-Saving Add-On for Living Room, Office & Home Organisation (Oak effect) - Image 4](https://m.media-amazon.com/images/I/61ZXqzhN0iL.jpg) ## Available Options This product comes in different **Color** options. --- ## 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.sk/products/807602586-billy-height-extension-unit-40x28x35-cm-top-extension-shelf-bookcase](https://www.desertcart.sk/products/807602586-billy-height-extension-unit-40x28x35-cm-top-extension-shelf-bookcase) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-08-24*