--- product_id: 319961891 title: "100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems" brand: "fantronix" price: "€ 32.89" currency: EUR in_stock: true reviews_count: 8 category: "Fantronix" url: https://www.desertcart.sk/products/319961891-100mm-4-inch-round-telescopic-wall-extension-sleeve-adjustable-ducting store_origin: SK region: Slovakia --- # Adjustable 350-500mm length Fits standard 100mm ducting Durable lightweight plastic 100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems **Brand:** fantronix **Price:** € 32.89 **Availability:** ✅ In Stock ## Summary > 📐 Elevate your ventilation game with precision and style! ## Quick Answers - **What is this?** 100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems by fantronix - **How much does it cost?** € 32.89 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/319961891-100mm-4-inch-round-telescopic-wall-extension-sleeve-adjustable-ducting) ## Best For - fantronix enthusiasts ## Why This Product - Trusted fantronix brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Universal Compatibility:** Perfectly matches standard 100 mm round ducts for extractor fans and vents. - • **Seamless Airflow Channel:** Creates a neat, secure passage that optimizes ventilation efficiency and reduces leaks. - • **Flexible Fit for Every Wall:** Telescopic design adapts from 350 to 500 mm, eliminating guesswork and extra cuts. - • **Built to Last, Easy to Install:** Strong yet lightweight plastic ensures durability without the hassle during setup. - • **Versatile Indoor & Outdoor Use:** Engineered for both internal and external walls in residential and commercial spaces. ## Overview The Fantronix 100mm Round Telescopic Wall Extension Sleeve offers an adjustable length from 350 to 500 mm, designed to fit standard 100 mm ducting for extractor fans and ventilation systems. Made from durable, lightweight plastic, it provides a clean, secure duct passage through internal or external walls, enhancing airflow efficiency in both domestic and commercial environments. ## Description Product Description Overview The Fantronix 100mm Telescopic Wall Sleeve is designed to create a clean, secure passage for ventilation ducting through internal or external walls. Suitable for extractor fans, bathroom and kitchen ventilation systems, and tumble dryer vents, it supports efficient airflow while adapting to varying wall thicknesses. With its adjustable telescopic design and durable plastic construction, this wall sleeve provides a practical solution for both domestic and commercial ventilation installations. Key Features Compatible with standard 100 mm (4") round ducting Adjustable telescopic length from 350 mm to 500 mm Provides a neat, secure duct passage through walls Suitable for internal and external wall installations Strong, lightweight plastic construction Benefits The adjustable 350–500 mm length allows flexible installation across different wall depths, reducing the need for cutting or modifying fixed-length duct sections. This ensures a more precise and professional finish. By creating a smooth, protected channel through the wall, the sleeve helps maintain consistent airflow for both exhaust and supply ventilation systems. Its lightweight yet durable construction makes handling and installation straightforward while offering long-term reliability. Applications Ideal for bathroom and kitchen extractor fans, tumble dryer vents, and general ventilation systems. Suitable for residential and light commercial properties where ducting needs to pass cleanly through internal or external walls. Installation Notes Designed to fit standard 100 mm ducting. Adjust the telescopic sleeve to match wall thickness before securing in position. Ensure both ends are properly aligned with connected ducting and sealed where required to maintain optimal airflow performance. Review: Extractor - Did the job. Review: It is not telescopic - It is not telescopic. Despite being built of two pipes (one thinner than the other), they don’t slide. ## Features - 100mm (4 Inch) Duct Compatibility – Designed for use with standard 100 mm round ducting, suitable for extractor fans, bathroom and kitchen ventilation systems. - Adjustable 350–500 mm Length – Telescopic wall sleeve extends from 350 mm to 500 mm, allowing flexible installation through different wall thicknesses. - Improves Airflow Through Walls – Provides a neat and secure duct passage for exhaust and supply air, helping maintain efficient ventilation performance. - Ideal for Internal & External Walls – Suitable for use with extractor fans, tumble dryer vents and general ventilation systems in domestic or commercial settings. - Durable Plastic Construction – Manufactured from strong, lightweight plastic for long-lasting performance and easy handling during installation. ## Technical Specifications | Specification | Value | |---------------|-------| | Manufacturer | FANTRONIX | | Package Dimensions | 30.1 x 10.6 x 10.4 cm; 390 g | | Size | 4" - 100mm | | Colour | White | | Batteries included? | No | | Batteries Required? | No | | Item Weight | 390 g | ## Images ![100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems - Image 1](https://m.media-amazon.com/images/I/21KzRExi0ZS.jpg) ![100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems - Image 2](https://m.media-amazon.com/images/I/51C-OeZipQS.jpg) ![100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems - Image 3](https://m.media-amazon.com/images/I/51FQvyG0xPS.jpg) ![100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems - Image 4](https://m.media-amazon.com/images/I/51PbMeLwwfS.jpg) ![100mm (4 Inch) Round Telescopic Wall Extension Sleeve – Adjustable Ducting Pipe for Extractor Fan, Exhaust & Supply Air Ventilation Systems - Image 5](https://m.media-amazon.com/images/I/51ivrxZyUyS.jpg) ## Questions & Answers **Q: How thick is the plastic. Is it strong or brittle?** A: Hi, I tried to measure thickness with a ruler, it appears to be a little under 2mm thick. I also took a video to try to give you some idea of how strong it is. It is not completely rigid as it is slightly flexible but even if you push firmly it doesn’t show signs of being brittle of breaking. That said I haven’t pushed it with absolute force as if deliberately trying to break it! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Extractor *by M***R on 1 June 2026* Did the job. ### ⭐ It is not telescopic *by J***E on 16 March 2026* It is not telescopic. Despite being built of two pipes (one thinner than the other), they don’t slide. ### ⭐⭐⭐ Excellent product *by D***E on 24 January 2022* Great Pro fitted and working ## Frequently Bought Together - FANTRONIX 100mm Round Telescopic Wall Extension Sleeve Nested Pipes Exhaust & Supply Air Extractor Fan Ventilation 4 inch Round Duct Extendable Vent Tube - Blauberg Condensation Control Passive Wall Intake Vent Grille Cover 100mm (4 inch) Spigot White Mould Control - Kair White Louvred Wall Vent Grille 155mm External Dimension with Flyscreen and Round 100mm - 4 inch Rear Spigot --- ## 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/319961891-100mm-4-inch-round-telescopic-wall-extension-sleeve-adjustable-ducting](https://www.desertcart.sk/products/319961891-100mm-4-inch-round-telescopic-wall-extension-sleeve-adjustable-ducting) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-09-02*