Rectangular backplate with straight fitting

The Sistem Air rectangular backplate with straight fitting is an essential component for connecting vacuum inlets to the piping network of a central vacuum system. Correct fixing of the backplate is fundamental to ensure a stable and secure connection, maintaining vacuum throughout the system and guaranteeing optimal performance.

The straight fitting is the ideal solution for renovations, partition walls and movable structures, offering excellent versatility and allowing easy, safe installation even in unconventional environments.

Backplate fixing

Backplate fixing requires precision to avoid issues during the installation of the vacuum inlet. The backplate must always be mounted flush with the plaster to ensure correct alignment and an airtight seal. These backplates are designed for easy installation on both masonry and plasterboard walls, using dedicated fixing holes.

Wall and plasterboard installation

The backplate can be installed on solid walls or plasterboard. Below are the recommended installation methods:

Masonry installation	Plasterboard installation
Fixing into masonry requires precision so that, during the installation of the vacuum inlet, the sealing elements engage perfectly. The backplate box must always be positioned flush with the plaster.	Using the fixing holes on the mounting frame, the backplates can be installed on plasterboard structures. The backplate box must always be positioned flush with the plaster.

Distinctive features

The rectangular backplates can also be located when covered by plaster, using a standard metal detector—an extremely useful feature during renovation or maintenance work.

Solutions for wall surface irregularities

If the wall surface is irregular and prevents perfect adhesion of the backplate, it is possible to use extension components to correct the installation without restoring the entire wall.

Recess up to 7 mm	Recess up to 12 mm	Recess over 12 mm	Restoring the vacuum inlet support point
No correction required when the recess is up to 7 mm from the plaster surface.	For recesses up to 12 mm: shorten the vacuum inlet, reposition the O-ring and use extension Art. 1457.1.	For recesses over 12 mm: use inlet extension Art. 1457.1 and trim it as needed.	If the vacuum inlet support point must be restored due to irregular plaster or extended wall chases, use the extension kit (Art. 1450.8). This allows extending the recessed box in 1 cm increments with no length limit.

The Sistem Air rectangular backplate with straight fitting is the ideal solution for anyone seeking a safe and efficient central vacuum system installation. Thanks to its innovative design, easy fixing system and dedicated solutions for wall irregularities, it is perfect for both residential and commercial installations. This backplate ensures optimal performance, stability and ease of use.