--- product_id: 52216924 title: "Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose" price: "$23.67" currency: USD in_stock: true reviews_count: 8 url: https://www.desertcart.us/products/52216924-kair-round-connector-100mm-4-inch-to-connect-duct-pipe store_origin: US region: United States of America --- # 100mm / 4 inch precision fit Universal duct & hose compatibility Lightweight durable polystyrene Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose **Price:** $23.67 **Availability:** ✅ In Stock ## Summary > 🔗 Connect with confidence — the ducting upgrade your setup deserves! ## Quick Answers - **What is this?** Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - **How much does it cost?** $23.67 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/52216924-kair-round-connector-100mm-4-inch-to-connect-duct-pipe) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable & Lightweight:** Crafted from robust polystyrene, this connector balances strength with minimal weight for hassle-free installation. - • **Exclusive Availability:** Hard to find in stores but easy to get online—don’t miss out on this essential ducting upgrade that professionals trust. - • **Multi-Application Ready:** Ideal for tumble dryers, extractor fans, hydroponics setups, and cooker hoods—upgrade your home or workspace ventilation instantly. - • **Versatile Compatibility:** Effortlessly joins any female part of the 100mm plastic duct range, including Kair’s full ducting lineup—expand your ventilation system with ease. - • **Seamless 100mm Connection:** Engineered for a perfect fit with standard 100mm round pipes and 102mm flexible hoses, ensuring airtight duct runs. ## Overview The Kair Round Connector 100mm is a precision-engineered plastic ducting connector designed to seamlessly join 100mm round pipes or 102mm flexible hoses. Made from durable polystyrene, it supports a wide range of ventilation applications including tumble dryers, extractor fans, and hydroponics. Lightweight and universally compatible within the Kair ducting range, it’s a must-have for creating efficient, long duct runs with airtight connections. ## Description Free delivery and returns on all eligible orders. Shop Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose. Review: Fit for purpose, with some modification. - Bought this to retro fit in the ducting of a 12v Manrose bathroom fan which, for some reason and unlike its predecessor, came without a backdraft shutter. As other buyers have mentioned, its a tight fit in 100mm ducting and I had to trim the outer central ridge on the shutter to fit it inside the ducting. Used a very sharp paperhangers knife to shave a millimetre or so from the ridge and it now fits perfectly, held in place, just in case, by a blob or two of silicone. Its working well so far: yes, it clatters when the wind blows but that goes with the territory when, as we do, you live in a windy coastal town. Not sure how long it'll last given the wear that the wind will place on the shutter's basic hinges, but Time will tell. Very easy to retro fit if you have the access, so recommended. Review: A good price. - Returned as wasn't needed. But the quality looked good in the packaging. ## Features - 100mm / 4 inch plastic ducting connector with male spigot. - Will fit inside 100mm round pipe or 102mm flexible hose and can be used to join multiple lengths of pipe together to form a long duct run. - Will join any female part of the 100mm plastic duct range including the Kair ducting range. - Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood and other ventilation applications. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004X4RJL2 | | Batteries Required? | No | | Batteries included? | No | | Best Sellers Rank | 3,602 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Ducting | | Colour | White | | Customer Reviews | 4.3 4.3 out of 5 stars (2,840) | | Date First Available | 19 April 2011 | | Item Package Quantity | 1 | | Item Weight | 49.9 g | | Manufacturer | Kair | | Manufacturer reference | DUCEK28 | | Material | Polystyrene | | Part Number | DUCEK28 | | Product Dimensions | 10.01 x 5.99 x 10.01 cm; 49.9 g | | Size | 100mm | ## Images ![Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 1](https://m.media-amazon.com/images/I/41M11qtSu7L.jpg) ![Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 2](https://m.media-amazon.com/images/I/61GZOcuDbCL.jpg) ![Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 3](https://m.media-amazon.com/images/I/61RcZFIgXLL.jpg) ![Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 4](https://m.media-amazon.com/images/I/61kTdmo4SUL.jpg) ![Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Image 5](https://m.media-amazon.com/images/I/61l1mKWdtmL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Fit for purpose, with some modification. *by B***N on 26 January 2025* Bought this to retro fit in the ducting of a 12v Manrose bathroom fan which, for some reason and unlike its predecessor, came without a backdraft shutter. As other buyers have mentioned, its a tight fit in 100mm ducting and I had to trim the outer central ridge on the shutter to fit it inside the ducting. Used a very sharp paperhangers knife to shave a millimetre or so from the ridge and it now fits perfectly, held in place, just in case, by a blob or two of silicone. Its working well so far: yes, it clatters when the wind blows but that goes with the territory when, as we do, you live in a windy coastal town. Not sure how long it'll last given the wear that the wind will place on the shutter's basic hinges, but Time will tell. Very easy to retro fit if you have the access, so recommended. ### ⭐⭐⭐⭐ A good price. *by N***W on 15 February 2026* Returned as wasn't needed. But the quality looked good in the packaging. ### ⭐⭐⭐⭐⭐ Works really well. *by J***N on 5 February 2026* This works really well, it has a plastic lip half way down which you can shave a bit off to fit inside / in the middle of a 100mm tube. They're hard to get in stores for some reason, but it works really well, as soon as the fan starts it opens, then closes when it's off. ## Frequently Bought Together - Kair Round Connector 100mm - 4 inch to Connect Duct Pipe or Flexible Ducting Hose - Kair Plastic Ducting Pipe 100mm - 4 inch / 1 Metre Long Length - Rigid Straight Duct Channel - Kair 90 Degree Elbow Bend 100mm - 4 inch Round Plastic Ducting Joint to Connect Round Duct Pipe or Flexible Hose --- ## 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.us/products/52216924-kair-round-connector-100mm-4-inch-to-connect-duct-pipe](https://www.desertcart.us/products/52216924-kair-round-connector-100mm-4-inch-to-connect-duct-pipe) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-12*