Blauberg Round Inline Back Draught Shutter 150mm (6") | RVK 150

The Blauberg RVK 150 Back Draught Shutter is designed to prevent unwanted reverse airflow and cold draughts in 150mm (6") inline ventilation ducting systems. Perfect for bathrooms, kitchens, utility rooms, and commercial ventilation, this gravity-operated shutter automatically closes when airflow stops—keeping your property energy-efficient and draught-free.

With durable UV-stabilised white PVC construction, the RVK 150 is built for long-term reliability in both domestic and commercial installations. Its male spigot ends allow quick connection to standard 150mm round plastic ducting, and the shutter can be mounted horizontally or vertically, offering maximum flexibility.

Features

• Fits 150mm (6") round ducting
• Gravity-operated flaps – automatically close to stop backflow
• Prevents cold draughts, odours, and reverse airflow
• Strong, UV-stabilised white PVC for indoor or sheltered outdoor use
• Male spigot connections for easy push-fit installation
• Flexible mounting – works vertically or horizontally (up to 90°)
• Compatible with inline fans, extractor fans, and mechanical ventilation systems

• Brand: Blauberg
• Model: RVK 150
• Duct Size: 150mm (6")
• Material: White PVC (UV-stabilised)
• Operation: Gravity flaps
• Installation Type: Inline – male-to-female duct connection
• Suitable For: Domestic & commercial ventilation systems

Applications

• Bathroom ventilation
• Kitchen extract systems
• Utility rooms
• Air handling and HVAC systems
• Inline fan installations
• Heat recovery & mechanical ventilation setups