--- product_id: 52216896 title: "Kair System 100 Round to Rectangular Offset Adapter/Connector" brand: "kair" price: "€ 16.84" currency: EUR in_stock: true reviews_count: 13 category: "Kair" url: https://www.desertcart.fr/products/52216896-kair-system-100-round-to-rectangular-offset-adapter-connector store_origin: FR region: France --- # 100mm round to 110x54mm rectangular conversion Push-fit easy installation Operates from -15°C to +60°C Kair System 100 Round to Rectangular Offset Adapter/Connector **Brand:** kair **Price:** € 16.84 **Availability:** ✅ In Stock ## Summary > 🔧 Upgrade your airflow game with the Kair System 100 Adapter — where precision meets effortless fit! ## Quick Answers - **What is this?** Kair System 100 Round to Rectangular Offset Adapter/Connector by kair - **How much does it cost?** € 16.84 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/52216896-kair-system-100-round-to-rectangular-offset-adapter-connector) ## Best For - kair enthusiasts ## Why This Product - Trusted kair brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quick Push-Fit Installation:** No tools needed—just snap it in place and save time on your HVAC or extractor fan setup. - • **Seamless Ducting Transition:** Effortlessly convert between round and rectangular Kair SYS-100 duct systems for ultimate airflow flexibility. - • **Optimized Airflow Efficiency:** Independently tested static pressure drop ensures your ventilation system runs smoothly and quietly. - • **Regulation-Ready & Versatile:** Complies with Part F Building Regulations, perfect for bathrooms, kitchens, HVAC, and whole-house ventilation. - • **Durable High-Performance Material:** Crafted from robust polystyrene/polypropylene to withstand temperature extremes and daily wear. ## Overview The Kair System 100 Round to Rectangular Offset Adapter/Connector enables seamless conversion between 100mm round and 110x54mm rectangular ducting systems. Made from durable polystyrene/polypropylene, it supports temperatures from -15°C to +60°C and features a push-fit design for quick installation. Independently tested for airflow efficiency and compliant with Part F Building Regulations, it’s ideal for bathroom, kitchen, HVAC, and whole-house ventilation applications. ## Description KAIR SYSTEM 100 OFFSET ROUND TO RECTANGULAR OFFSET ADAPTER/CONNECTOR Product Summary Kair Offset Rectangular to Round Connector. At one end there is a 100mm Round Female Spigot that will accept any Male Kair SYS-100 100mm round fitting. Requires round duct connector (Part: "DUCEK28") to connect to 100mm straight pipe - (Part: "DUCVKC250") The other end is a female spigot and fits over Kair 110 x 54mm Rectangular Duct Pipe (Part: "DUCVKC249").Allows you to convert between Kair SYS-100 100mm round and 110mm x 54mm rectangular ducting systems. Built to last out of Polystyrene/Polypropylene Material. Max / min temperature: +60c / -15c. Easy to install and durable, just push-fit duct and fittings together. For permanent fixings, seal joints with silicone sealant or tape. Perfectly suited for ducting your Bathroom, Toilet, or Kitchen extractor fan, hydroponics, in-Line extract Fans, tumble dryer, or cooker hood. This ducting outlet can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive stack vent, air conditioning, HVAC, and Heat Recovery Systems. Suitable to use in compliance with Part F Building Regulations. Airflow performance independently tested by BSRIA or BRE. Suitable to use in compliance with Part F Building Regulations. Static Pressure Drop in Pascals: 15 l/s = 3.70 Pa - 30 l/s = 14.60 Pa - 60 l/s = 58.00 Pa. Looking for C Review: Mr - Did the job Review: excellent service - perfect fit for my air conditioner unit, good value ## Features - Allows you to convert between Kair SYS-100 100mm round and 110mm x 54mm rectangular ducting systems. - Easy to fit and durable. - Round Connector - 100mm straight - Fits over other connectors - requires DUCEK28 to connect to straight pipe DUCVKC250 - Rectangular Connector - 110mm x 54mm - Fits over straight duct DUCVKC249 - Max / Min Temperature: +60c / -15c. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004X4S1K0 | | Best Sellers Rank | 8,533 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Ducting 561 in Bathroom Hardware | | Brand | Kair | | Colour | White | | Connector Type | Adapter | | Connector type | Adapter | | Customer Reviews | 4.6 out of 5 stars 878 Reviews | | Item Dimensions | 12 x 11.4 x 10.7 centimetres | | Item Highlight | Fits over other connectors and fittings and pipe requires, ROUND END: 100mm (4 inch) Fits over other connectors | | Item Weight | 0.09 Kilograms | | Item dimensions L x W x H | 12 x 11.4 x 10.7 centimetres | | Manufacturer | Kair | | Material | Polystyrene | | Number of Packs | 1 | | Number of Pieces | 1 | | Part Number | DUCVKC253F | | Size | 100 | | Thread Size | 100mm | | Thread Type | UN | | Unit Count | 1.0 count | ## Product Details - **Brand:** Kair - **Colour:** White - **Connector type:** Adapter - **Item dimensions L x W x H:** 12 x 11.4 x 10.7 centimetres - **Item weight:** 0.09 Kilograms - **Material:** Polystyrene - **Number of pieces:** 1 - **Size:** 100 - **Thread size:** 100mm - **Thread type:** UN ## Images ![Kair System 100 Round to Rectangular Offset Adapter/Connector - Image 1](https://m.media-amazon.com/images/I/41BZCtM3oSL.jpg) ![Kair System 100 Round to Rectangular Offset Adapter/Connector - Image 2](https://m.media-amazon.com/images/I/412aFNbvm6L.jpg) ![Kair System 100 Round to Rectangular Offset Adapter/Connector - Image 3](https://m.media-amazon.com/images/I/61SjptO+vYL.jpg) ![Kair System 100 Round to Rectangular Offset Adapter/Connector - Image 4](https://m.media-amazon.com/images/I/5131LDgJ4fL.jpg) ![Kair System 100 Round to Rectangular Offset Adapter/Connector - Image 5](https://m.media-amazon.com/images/I/51aT4ddab0L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Mr *by R***S on 3 September 2026* Did the job ### ⭐⭐⭐⭐⭐ excellent service *by R***N on 11 August 2026* perfect fit for my air conditioner unit, good value ### ⭐⭐⭐⭐ Works as expected *by B***N on 31 August 2026* Does as required. ## Frequently Bought Together - Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector for Converting to Different Size Duct Systems - Kair Rectangular Flat Ducting 110mm x 54mm - 1 Metre Length Flat Channel Pipe - Kair 110 mm x 54 mm Rectangular to Round (100 mm Male Spigot) 90 Degree Bend - SYS-100 - DUCVKC237 by Kair --- ## 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.fr/products/52216896-kair-system-100-round-to-rectangular-offset-adapter-connector](https://www.desertcart.fr/products/52216896-kair-system-100-round-to-rectangular-offset-adapter-connector) --- *Product available on Desertcart France* *Store origin: FR* *Last updated: 2026-11-10*