--- product_id: 411220133 title: "Kair White Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters" brand: "kair" price: "S$38" currency: SGD in_stock: true reviews_count: 5 category: "Kair" url: https://www.desertcart.sg/products/411220133-kair-white-gravity-grille-155mm-external-dimension-ducting-air-vent store_origin: SG region: Singapore --- # 7200mm² free airflow 155mm external dimension Automatic non-return shutters Kair White Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters **Brand:** kair **Price:** S$38 **Availability:** ✅ In Stock ## Summary > 💨 Elevate your airflow game with smart, silent ventilation! ## Quick Answers - **What is this?** Kair White Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters by kair - **How much does it cost?** S$38 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/411220133-kair-white-gravity-grille-155mm-external-dimension-ducting-air-vent) ## 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 - • **Smart Airflow Control:** Gravity-operated non-return shutters automatically close to block unwanted odors, noise, and drafts—no springs to fail. - • **Precision Fit & Finish:** 155mm x 155mm external size with a 100mm round spigot ensures seamless integration with standard ducting systems. - • **Effortless Installation:** Push-fit design lets you connect ducts and fittings quickly without hassle, perfect for DIY or professional setups. - • **Versatile Ventilation Solution:** Ideal for bathrooms, kitchens, hydroponics, HVAC, and heat recovery systems—compliant with Part F Building Regulations. - • **Proven Performance & Durability:** Independently tested airflow with low static pressure drop ensures efficient ventilation and long-lasting polypropylene construction. ## Overview The Kair White Gravity Grille is a 155mm external dimension ducting air vent featuring a 100mm round rear spigot and automatic non-return shutter flaps. Designed for indoor and outdoor use, it prevents backflow of odors, noise, and drafts with gravity-operated shutters requiring no springs. Easy to install with push-fit duct compatibility, it suits a wide range of ventilation needs including bathrooms, kitchens, HVAC, and heat recovery systems. Made from durable polypropylene and independently airflow tested, it complies with Part F Building Regulations for reliable, efficient ventilation. ## Description Kair Gravity Grille 100mm / 4 inch with Round Spigot Plastic 100mm / 4 inch air exhaust outlet round vent with non-return shutter flaps which close automatically when not in use to prevent unpleasant odours noises or draughts flowing back through your duct into your property. 4 inch / 100mm round male spigot on the back of the grille fits inside most comparable size pipes/hoses such as Kair 100mm Round Female Duct Pipe Part: DUCVKC250 or 102mm flexible hose Part: DUCP002/102/35. Easy to install just push-fit together & seal if required using a method of your choice (Popular options include Mastic Sealant Poly Cement or Tape). Perfectly suited as an outlet for your Bathroom Toilet or Kitchen extractor fan Hydroponics In-Line Extract Fans or Cooker Hood. Kair products are made in the UK and are compatible with the extensive range of fittings outlets and grilles in multiple sizes to offer your a complete solution for all of your ventilation needs. 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 SYS-100 plastic rigid ducting is perfect for DIY and Trade use and provides superior airflow performance and durability versus flexible duct. Review: Perfetto. Quello che volevo. Color mattone si mimetizza alla perfezione sul paramano. Qualità/prezzo eccezionale. Lo uso da mesi. Review: Aucun intérêt les volets obstruent l’air. Ne pas acheter ## Features - White Plastic Ducting Air Inlet / Air Outlet with Gravity Shutters. 155mm x 155mm external dimension with 4 inch / 100mm round male rear spigot on the back of the grille for indoor or outdoor use. - Non-return shutter flaps close automatically when not in use. Stops unpleasant odours, noises, or draughts flowing back through your duct. Gravity flap - no need for springs that could break. - Easy to install, just push-fit duct and fittings together. Perfectly suited Bathroom or Kitchen extractor fan, Hydroponics fan, or In-Line Extract Fan. - This grille can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive ventilation, positive input, 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. Free Air: 7200mm2. Static Pressure Drop in Pascals: 15 l/s = 10.94 Pa - 30 l/s = 18.59 Pa - 60 l/s = 24.21 Pa. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004X4RVUQ | | Batteries Included? | No | | Batteries Required? | No | | Brand Name | Kair | | Color | White | | Compatible Device | cooker_hood | | Control Console | Motion Sensor | | Customer Reviews | 4.5 4.5 out of 5 stars (3,656) | | Date First Available | 2 November 2016 | | Efficiency | A+++ | | Efficiency (10 classes) | A+++ to G | | Included Components | Non-return shutter flaps, 4 inch / 100mm round male spigot | | Item Weight | 81.6 g | | Material Type | Polypropylene (PP) | | Model Info | SYS-100 | | Part Number | DUCVKC243 | | Product Dimensions | 15.5 x 4 x 15.5 cm; 81.65 g | | Special Features | Automatic Non-Return Shutters | ## Images ![Kair White Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters - Image 1](https://m.media-amazon.com/images/I/41kqLrMfzwL.jpg) ## Available Options This product comes in different **Color** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***E on 11 May 2021* Perfetto. Quello che volevo. Color mattone si mimetizza alla perfezione sul paramano. Qualità/prezzo eccezionale. Lo uso da mesi. ### ⭐ Review *by L***R on 21 August 2025* Aucun intérêt les volets obstruent l’air. Ne pas acheter ### ⭐⭐⭐⭐⭐ Review *by C***N on 14 December 2017* Prodotto che rispetta la descrizione, le lamelle sono leggere e anche con poco flusso d'aria si alzano. Io l'ho montato sulla facciata di casa, all'uscita dell'estrattore della cucina per evitare l'ingresso di correnti d'aria esterne. Funziona egregiamente. ## Frequently Bought Together - Kair White Gravity Grille 155mm External Dimension Ducting Air Vent with 100mm - 4 inch Round Rear Spigot and Not-Return Shutters - Kair Plastic Ducting Pipe 100mm - 350mm Short Length - Rigid Straight Duct Channel - 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.sg/products/411220133-kair-white-gravity-grille-155mm-external-dimension-ducting-air-vent](https://www.desertcart.sg/products/411220133-kair-white-gravity-grille-155mm-external-dimension-ducting-air-vent) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-07-06*