Truma Duct Shut-Off SP2 (40121-02)

Truma Duct Shut-Off SP2 (40121-02)

The Truma SP2 Duct Shut-Off allows you to centrally close off an individual air duct in your blown air heating system — redirecting heat to other rooms or outlets and improving the efficiency of your Truma heater. It mounts on the wall unit and is operated via a Bowden cable and slider, giving you direct manual control without any tools. Compatible with 65mm and 72mm diameter ducts used in Truma systems.

Key Features

• Central shut-off for individual blown air ducts — redirect heat as needed
• Bowden cable and slider operation — easy wall-mounted manual control
• Compatible with 65mm and 72mm duct diameters
• Mounts on the wall unit alongside your existing Truma distribution components
• Genuine Truma part — designed for use with Truma blown air heating systems

How It Works

The SP2 is installed in the duct run between the Truma heater and the outlet. The Bowden cable connects to a slider mounted on the wall, allowing you to open or close the duct from an accessible position. Closing a duct in an unused room directs more warm air to other outlets, improving comfort and efficiency in occupied spaces.

Installation

For use with Truma blown air heating systems. Refer to the Truma installation instructions for duct routing, cable routing, and slider mounting. Suitable for professional or competent DIY installation.

Part number: 40121-02  |  Compatible duct diameters: 65mm and 72mm