Dometic 25' Insulated Flex R4.2 Ducting/Duct - 5"

The Dometic 25' Insulated Flex R4.2 Ducting/Duct – 5" is a premium climate control distribution system designed for mobile applications, including RVs, expeditionary vehicles, and custom automotive builds that demand high-performance air conditioning or heating solutions. Built by Dometic, a leader in mobile climate systems, this ducting provides the foundation for efficient temperature management in confined spaces where traditional HVAC infrastructure isn't practical.

This 25-foot flex duct features an R4.2 thermal insulation rating, which minimizes temperature loss during air transit and reduces condensation formation—critical in humid or temperature-variable environments. The 5-inch diameter accommodates mid-to-high-capacity airflow without excessive backpressure, making it ideal for paired or multi-zone distributions. The flexible design allows routing through tight engine bays, under chassis, or along interior cabin paths without rigid fitting modifications.

Dometic's insulated construction prevents cooling loss in hot ambient conditions and heating loss in cold climates, ensuring your compressor operates at peak efficiency rather than cycling constantly to compensate for duct-side heat loss. This ducting is compatible with Dometic's modular climate system, making it an essential component for anyone looking to enhance their mobile climate control setup.