1. Product Overview
The Schellenberg 51207 Duo Maxi Roller Shutter Belt Guide is designed to effectively seal drafty strap openings for roller shutters, contributing to reduced energy loss. This guide is suitable for roller shutter straps with a width of 23 mm, corresponding to the Maxi system. Its design allows for quick and easy installation directly onto the wall without the need to remove the existing roller shutter strap.

Image 1.1: The product packaging for the Schellenberg 51207 Duo Maxi Roller Shutter Belt Guide, showing the white belt guide and indicating 'Made in Germany' and 'System Maxi'.
2. Safety Instructions
- Read all instructions carefully before installation and use.
- Ensure the installation surface is clean, dry, and structurally sound.
- Use appropriate tools for installation.
- Keep small parts away from children to prevent choking hazards.
- Do not modify the product in any way, as this may compromise its function and safety.
- If you encounter any difficulties during installation or operation, consult a qualified professional.
3. Package Contents
Verify that all components are present before beginning installation:
- 1x Schellenberg Duo Maxi Belt Guide (consisting of front and back housing, internal draft excluder)
- 1x Foam gasket (for sealing against the wall)
- Instruction leaflet

Image 3.1: The individual components of the Schellenberg 51207 Duo Maxi Belt Guide, including the main housing, foam gasket, and the instruction leaflet.
4. Setup and Installation
The Schellenberg Duo Maxi Belt Guide is designed for straightforward installation without requiring the removal of the roller shutter strap.
4.1 Preparation
- Ensure the area around the existing strap opening is clean and free from dust or debris.
- Gather necessary tools: screwdriver, pencil, and possibly a drill if new mounting holes are required.
4.2 Installation Steps
- Separate the Guide: Carefully open the belt guide housing. It typically consists of two halves that can be separated to allow the strap to be inserted.
- Position the Foam Gasket: Place the foam gasket on the back of one half of the belt guide. This gasket provides an airtight seal against the wall.
- Insert the Strap: Guide the roller shutter strap through the opening in the belt guide. Ensure the strap moves freely within the guide.
- Mount to the Wall: Position the belt guide over the existing strap opening on the wall. Mark the screw holes with a pencil.
- Secure the Guide: Attach the belt guide to the wall using appropriate screws (not included). Ensure it is securely fastened and level.
- Close the Housing: Reassemble the two halves of the belt guide, ensuring they snap or screw together firmly.

Image 4.1: The disassembled components of the Schellenberg 51207 Duo Maxi Belt Guide, showing the front cover, the main housing with the internal draft excluder, and the foam gasket.

Image 4.2: The Schellenberg 51207 Duo Maxi Belt Guide installed on a wall, with a roller shutter strap passing through it, demonstrating its function.
5. Operating Instructions
Once installed, the Schellenberg Duo Maxi Belt Guide operates passively. It guides the roller shutter strap smoothly while the integrated draft excluder minimizes air infiltration through the strap opening. No specific user interaction is required beyond the normal operation of your roller shutter.

Image 5.1: A close-up view of the Schellenberg 51207 Duo Maxi Belt Guide's opening, highlighting the internal mechanism designed to guide the strap and prevent drafts.
6. Maintenance
The Schellenberg Duo Maxi Belt Guide requires minimal maintenance.
- Cleaning: Periodically wipe the exterior of the belt guide with a soft, damp cloth to remove dust and dirt. Avoid using abrasive cleaners or solvents.
- Inspection: Occasionally check the belt guide for any signs of wear or damage. Ensure the roller shutter strap moves freely and smoothly through the guide.
- Draft Seal: If you notice increased drafts, inspect the foam gasket for damage or displacement.
7. Troubleshooting
- Strap Sticking: If the roller shutter strap is sticking or not moving smoothly, check for any obstructions within the guide. Ensure the guide is clean and properly aligned.
- Drafts Persist: Verify that the belt guide is securely mounted to the wall and that the foam gasket is properly seated and undamaged. Ensure the guide is fully closed.
- Visible Damage: If the belt guide housing is cracked or broken, it should be replaced to maintain its functionality and draft-sealing properties.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | 51207 |
| Brand | Schellenberg |
| Dimensions (L x W x H) | 3.35" x 2.36" x 0.79" (approx. 85 x 60 x 20 mm) |
| Material | Plastic (Kunststoff) |
| Color | White |
| Strap Width Compatibility | 23 mm (Maxi System) |
| Item Weight | 2.43 ounces |
| Part Number | 51207 |
| GTIN | 04003971512073 |
9. Warranty and Support
For information regarding warranty terms and conditions, please refer to the documentation provided with your purchase or visit the official Schellenberg website. For technical support or assistance, please contact Schellenberg customer service through their official channels.





