--- product_id: 415221702 title: "Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair" brand: "kair" price: "₹ 3355" currency: INR in_stock: true reviews_count: 5 url: https://www.desertcart.in/products/415221702-kair-straight-round-to-rectangular-adaptor-110mm-x-54mm-rectangular store_origin: IN region: India --- # 100mm round spigot compatibility 110mm x 54mm rectangular fit Low static pressure drop Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair **Brand:** kair **Price:** ₹ 3355 **Availability:** ✅ In Stock ## Summary > 🔄 Transform your ducting game with precision and ease! ## Quick Answers - **What is this?** Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair by kair - **How much does it cost?** ₹ 3355 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.in](https://www.desertcart.in/products/415221702-kair-straight-round-to-rectangular-adaptor-110mm-x-54mm-rectangular) ## 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 - • **Space-Savvy Design:** Compact adaptor ideal for tight spaces without compromising airflow efficiency. - • **Pro-Grade Durability:** Crafted from high-quality polystyrene/polypropylene for long-lasting, reliable performance. - • **Plug & Play Installation:** Push-fit design ensures quick setup—perfect for busy pros and savvy DIYers alike. - • **Seamless Size Conversion:** Effortlessly switch between rectangular and round duct systems for ultimate installation flexibility. - • **Certified Airflow Performance:** Independently tested to meet Part F Building Regulations with minimal pressure loss. ## Overview The Kair Ducting Adaptor 110mm x 54mm to 100mm is a robust, UK-made connector designed to convert rectangular ducting to round systems seamlessly. Engineered from durable polystyrene/polypropylene, it supports efficient airflow with low static pressure drop, complies with Part F Building Regulations, and fits perfectly in space-constrained installations. Ideal for HVAC, extractor fans, and ventilation setups, it offers quick push-fit installation backed by Kair’s 100% satisfaction guarantee. ## Description Kair Ducting Adaptor 110mm x 54mm to 100mm - 4 inch Rectangular to Round Straight Channel Connector RECTANGULAR 110mm x 54mm The flat end is a female spigot and fits over 110mm x 54mm Rectangular Duct Pipe Part: DUCVKC249. ROUND 100mm / 4 inch Circular end is a 100mm round female spigot that will accept any male 100mm round fittings. br> Requires round duct connector Part: DUCEK28 to connect to 100mm straight pipe - Part: DUCVKC250. Allows you to convert between round and rectangular ducting systems. Made in the UK using high-quality Polystyrene/Polypropylene plastic. 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. 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. Perfectly suited for ducting your Bathroom or Kitchen extractor fan, hydroponics, in-line extract Fans, tumble dryer, or cooker hood. This item can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive stack vent, positive input ventilation, air conditioning, HVAC, and Heat Recovery systems. Kair plastic rigid ducting is perfect for DIY and Trade use and provides superior airflow performance and durability versus flexible duct. ## Features - Rectangular End: 110mm x 54mm, fits over rectangular duct pipes. - Round End 100mm Fits over other connectors and fittings. Pipe requires an additional connection. - Allows the conversion of round and rectangular ducting systems. - The Kair short rectangular to round connector is ideal for installations where space is limited. - Kair 100%. Compatible with the extensive range of plastic fittings, outlets and grilles ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B004X4S1K0 | | Best Sellers Rank | #53 in Electrical Conduit Fittings | | Date First Available | 12 January 2016 | | Is Discontinued By Manufacturer | No | | Manufacturer | Kair | | Manufacturer Reference | DUCVKC253F | | Product Dimensions | 12 x 11.4 x 10.7 cm; 90 g | ## Product Details - **Brand:** Kair - **Colour:** White - **Item dimensions L x W x H:** 12 x 11.4 x 10.7 centimeters - **Material:** Polystyrene - **Size:** 110mm x 54mm to 100mm ## Images ![Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair - Image 1](https://m.media-amazon.com/images/I/41BZCtM3oSL.jpg) ![Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair - Image 2](https://m.media-amazon.com/images/I/412aFNbvm6L.jpg) ![Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair - Image 3](https://m.media-amazon.com/images/I/61SjptO+vYL.jpg) ![Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair - Image 4](https://m.media-amazon.com/images/I/5131LDgJ4fL.jpg) ![Kair Straight Round to Rectangular Adaptor (110mm x 54mm Rectangular to 100mm Round) - SYS-100 - DUCVKC253 by Kair - Image 5](https://m.media-amazon.com/images/I/51aT4ddab0L.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Tal cual el anuncio *by on Reviewed in Spain 3 July 2020* Muy buen material ### ⭐⭐⭐⭐⭐ Ottimo prodotto *by on Reviewed in Italy 13 November 2020* Duttile e condirne alle esigenze ### ⭐⭐⭐⭐⭐ Mr *by on Reviewed in the United Kingdom 3 September 2026* Did the job ## 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.in/products/415221702-kair-straight-round-to-rectangular-adaptor-110mm-x-54mm-rectangular](https://www.desertcart.in/products/415221702-kair-straight-round-to-rectangular-adaptor-110mm-x-54mm-rectangular) --- *Product available on Desertcart India* *Store origin: IN* *Last updated: 2026-11-08*