--- product_id: 492832841 title: "8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork" brand: "cuchiilo" price: "¥126558" currency: JPY in_stock: true category: "Cuchiilo" url: https://www.desertcart.jp/products/492832841-8-inch-insulated-duct-hvac-insulation-duct-insulated-flex-duct store_origin: JP region: Japan --- # Up to 85% noise reduction with sound-absorbing insulation R-4.2 glass wool insulation for superior thermal resistance 8-inch diameter for versatile HVAC fit 8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork **Brand:** cuchiilo **Price:** ¥126558 **Availability:** ✅ In Stock ## Summary > ❄️ Stay cool, quiet, and efficient with every bend! ## Quick Answers - **What is this?** 8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork by cuchiilo - **How much does it cost?** ¥126558 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/492832841-8-inch-insulated-duct-hvac-insulation-duct-insulated-flex-duct) ## Best For - cuchiilo enthusiasts ## Why This Product - Trusted cuchiilo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Heavy-Duty Material:** Thickened aluminum foil and elastic steel wire resist heat, acid, alkali, and flame - • **Quiet Comfort Upgrade:** Fluffy glass wool core absorbs sound, cutting noise by up to 85% for peaceful environments - • **Flexible & Durable Design:** Bend freely without rigid elbows; maintains shape to reduce airflow resistance - • **Multi-System Compatibility:** Ideal for high, medium, and low pressure ventilation without corrosive gases - • **Premium Thermal Insulation:** R-4.2 rating with glass wool layer keeps HVAC systems energy-efficient and temperature-stable ## Overview The Cuchiilo 8 Inch Insulated Flexible Duct features a robust aluminum foil exterior reinforced with elastic steel wire and a high-performance R-4.2 glass wool insulation core. Designed for HVAC and exhaust systems, it offers exceptional thermal resistance (-4℃ to 454℃), superior noise reduction up to 85%, and flexible installation without loss of shape or airflow efficiency. Perfect for professional-grade ventilation systems requiring durability, sound absorption, and energy efficiency. ## Description Cuchiilo 8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - desertcart.com ## Features - 【🌿🛒High-quality performance 8 insualted duct】Made of thickened aluminum foil material and made of high-strength elastic spiral steel wire.The middle is covered with glass fiber insulation layer, which has high temperature resistance, acid and alkali resistance, and flame retardancy. - 【🌿🛒Premium Glass Wool Insualtion 】Glass wool Insualtion is the safest building material, with high corrosion resistance and thermal insulation,R value: R-4.2. The temperature resistance range is -4℃~454℃. - 【🌿🛒Sound absorption and noise reduction insulation】 The internal structure of glass wool insulationis fluffy and the overall density is large, which can absorb the sound in time,Noise can be reduced by up to 85%. - 【🌿🛒8 inch Flexible Duct】 It can be bent arbitrarily, without rigid elbows, the aluminum foil is self-sustaining and will not retract after installation.It can maintain the flatness in the tube and reduce the wind resistance. - 【🌿🛒Multi Function】Used for high, medium and low pressure ventilation system without corrosive gas. Mainly used in central air conditioning HVAC system,Fresh air ventilation systems, mechanical equipment recovery systems and other ventilation systems that do not contain corrosive gases, etc. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BGH2SZ5H | | Best Sellers Rank | #137,176 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #320 in HVAC Ducting | | Brand | Cuchiilo | | Brand Name | Cuchiilo | | Coverage | 200 square feet (R-4.2) | | Item Dimensions L x W | 300"L x 8"W | | Manufacturer | Cuchiilo | | Material | Rubber | | Material Type | Rubber | | Product Dimensions | 300"L x 8"W | | Recommended Uses For Product | Ventilation and Air Conditioning Systems | | Unit Count | 1 Count | ## Product Details - **Brand:** Cuchiilo - **Manufacturer:** Cuchiilo - **Material:** Rubber - **Product Dimensions:** 300"L x 8"W - **Recommended Uses For Product:** Ventilation and Air Conditioning Systems ## Images ![8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - Image 1](https://m.media-amazon.com/images/I/71qOCNmLMXL.jpg) ![8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - Image 2](https://m.media-amazon.com/images/I/7198Zk97eXL.jpg) ![8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - Image 3](https://m.media-amazon.com/images/I/712OBBWkU6L.jpg) ![8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - Image 4](https://m.media-amazon.com/images/I/71ia-CZVOOL.jpg) ![8 Inch Insulated Duct,HVAC Insulation Duct,Insulated Flex Duct, AC Fleixble Duct,HVAC Ducting, Insulation Duct,8''25 'Insulated Flexible Ducting,R-4.2 for Heavy Duty HVAC & Exhaust Ductwork - Image 5](https://m.media-amazon.com/images/I/71gpj4rH1AL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: Why is it important to have HVAC insulated ducts in a building?** A: Insulated ducts help maintain consistent temperature levels and prevent energy loss. They also reduce condensation and help improve indoor air quality. **Q: Do insulated HVAC ducts help reduce noise from the HVAC system?** A: It may help reduce noise the importance of the insulation is to reduce condensation in changeable temperature areas. **Q: Can this be used for a bathroom vent fan?** A: Yes you can. **Q: Are there any maintenance tips for ensuring the longevity of insulated HVAC ducts?** A: Regular inspections for damage or wear, proper sealing of joints, and keeping the ducts clean can help extend the life of insulated HVAC ducts. ## Frequently Bought Together - Cuchiilo 8 Inch 25 Feet Insulated Flexible Duct R4.2,8 Inch Insulated Flexible Duct,8in Insulated Ducting 8in Insulated Ducting 8insulated Flexible Duct,for Heating and Air Conditioning HVAC Systems - TapePlus 4 Pack Professional Grade Aluminum Foil Tape - 2 Inch by 210 Feet (70 Yards) - Perfect for HVAC, Sealing & Patching Hot & Cold Air Ducts, Metal Repair, and Much More - Aluminum Foil Tape, 2 inch x 65 Feet (3.9 mil), Insulation Adhesive Metal High Temperature Heavy Duty HVAC Tape, Silver for Ductwork, Dryer Vent, HVAC --- ## 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.jp/products/492832841-8-inch-insulated-duct-hvac-insulation-duct-insulated-flex-duct](https://www.desertcart.jp/products/492832841-8-inch-insulated-duct-hvac-insulation-duct-insulated-flex-duct) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-21*