Majestic UD4, 4" (100mm) uninsulated flex duct for outside air - includes two 42" (1065mm) sections

Majestic UD4 Uninsulated Flex Duct – 4" (100mm) for Outside Air Ensure proper ventilation for your fireplace with the Majestic UD4 Uninsulated Flex Duct. Designed for outside air intake, this flexible duct helps maintain efficient combustion and airflow. Key Features: 4" (100mm) uninsulated flex duct for reliable air supply Includes two 42" (1065mm) sections for versatile installation Enhances combustion efficiency by providing fresh outside air Flexible, lightweight design for easy installation Compatible with Majestic fireplaces for a seamless fit Improve your fireplace’s performance with the Majestic UD4 Uninsulated Flex Duct, an essential component for effective ventilation.