Dometic 25' Insulated Flex R4.2 Ducting/Duct - 3"

The Dometic 25' Insulated Flex R4.2 Ducting/Duct - 3" is a heavy-duty thermal management solution engineered for mobile command centers, tactical operations vehicles, and field deployment HVAC systems. Military and law enforcement personnel rely on this insulated ducting to maintain climate control in mobile shelters, equipment trailers, and temporary operational bases where temperature regulation is mission-critical. The 25-foot length provides flexibility for complex routing in confined spaces while maintaining consistent thermal performance across the entire run.

This ducting features R4.2 insulation rating with a full 1-inch wall thickness of thermal barrier material, paired with a durable round wire and mylar fabric shell construction that resists puncture and abrasion during transport and field installation. The 3-inch diameter accommodates standard mobile HVAC outlet sizing while the flexible design allows for 90-degree bends and routing around obstacles without rigid duct sections or connectors. The mylar outer layer provides moisture resistance and maintains structural integrity in humid operational environments, critical for sustained missions in variable climates.

Field operators and vehicle specialists benefit from the lightweight construction—just 4.3 pounds—allowing rapid deployment and repositioning without crew fatigue. Installation is straightforward: the duct connects directly to Dometic air conditioning units and standard 3-inch ducting ports using compression fittings or hose clamps, making it compatible with most tactical vehicle climate systems. The compact 10 x 10-inch coiled shipping profile enables easy transport in supply containers, while the 25-foot length typically covers ducting runs in most vehicle and shelter configurations without waste.