YuHong Dundas Jafine Insulated Flexible Duct - Fiber Insulation, Black - 4" x 25' — Residential Use, Standard Application

The YuHong 4 in x 25 ft flexible insulated duct is designed for efficient air distribution in heating, ventilation, and air conditioning systems. This insulated ductwork features a durable fiber insulation layer with an R-value of 6, helping to minimize heat and cool loss for improved energy efficiency. The flexible helix core is constructed from 2-ply polyester laminate and reinforced with corrosion-resistant zinc-coated wire, making it easy to install in tight or hard-to-reach spaces without the need for additional elbows. The heavy-duty, fire-retardant black polyethylene vapor barrier provides added protection and durability. Ideal for use in general ventilation, intake, and exhaust applications, this 4 inch insulated flexible ducting can be used as a replacement for traditional galvanized pipe in most residential and commercial settings. The YuHong insulated flexible ducting is UL and cUL 181 listed as a class 1 air duct, ensuring safety and compliance with building codes. This product is a reliable choice for anyone looking to upgrade their HVAC system with quality insulated ductwork that is easy to handle and install.

• PRODUCT IDENTIFICATION: Yuhong general in black — sourced direct from the manufacturer or authorized distributor. Designed for standard US residential install conditions across remodel, new-construction, and individual fixture replacement work.
• GENERAL INSTALLATION: Designed for standard US residential use — applied or installed per the manufacturer's directions on the labeled surfaces or substrates. Built to meet common US residential install specs across new-construction and replacement work.
• BLACK FINISH: Ships in Black finish — coordinates with matching YuHong accessory pieces in the same finish family for a unified look across the install location. Designed for standard US residential install conditions across remodel, new-construction, and individual fixture replacement work.
• YUHONG BRAND: Part of the YuHong residential product line — backed by manufacturer support and warranty terms as specified by the brand. Sourced direct from the manufacturer or authorized distributor. Designed for standard US residential install conditions across remodel, new-construction, and individual fixture replacement work.
• RESIDENTIAL & COMMERCIAL USE: Designed for standard US residential and light-commercial install conditions across new-construction, full remodel, and individual unit replacement work. Pairs with matching same-brand accessory items where applicable.