A cassette roller blind is a further development of a traditional roller blind. It has a protective aluminium cassette and side channels that stop light coming in along the edges. The fabric is hidden in the cassette, which reduces wear and protects the cloth from dust and dirt.
Cassette roller blinds are among the most used interior sun screens. They are often fitted in offices, where drilling into a wall or ceiling is not possible. The main advantage is that they are easy to use and quick to install. The whole mechanism is glued or screwed to the window sash.
Side channels and blackout
Shaped side channels keep the fabric of some models from standing out from the glass, even when the window is open. They also close the gap along the sides, so the room can be darkened almost completely. That is the difference from a free-hanging roller blind, where light easily finds its way in at the edges.
When the blind is raised, the fabric sits closed inside the cassette. Dust and dirt do not settle on the cloth, and the fabric is protected from sunlight. The cassette blind therefore keeps its colour longer than a blind that lies open on the roller.
Windows where a standard blind does not fit
The cassette suits windows with a rounded top or a fan shape, where a traditional roller blind is difficult or impossible to fit. Because the mechanism sits on the sash, you can tilt and open the window without the blind catching on the frame or the wall. That is useful in windows that are aired often, both at home and in an office.
Fitting on the sash also means the blind moves with the window when it opens. The side channels hold the fabric in place, so the light control remains even in the ventilation position. You get privacy and the option to let air in at the same time.
Because the cassette sits on the sash, you do not need to fix it to the wall or the ceiling. That is why it is used where drilling is not allowed. Adhesive is enough on many sashes, and screws are used when the surface needs them. In both cases the mechanism, the fabric and the side channels stay together and travel with the window when it opens.
How the models differ
The cassette blinds are made to measure. The configurator is the place to order once you already know the model, because cassette, channels and size limits are not the same for every type. The product sheets RBC-BU19C, RBC-CASC, RBC-CAMC and RBC-CALC describe each model: the cassette, the side channels and how it is fitted to the sash. Read the sheet for the model you intend to order before you enter width and height.
The guide takes you through measuring, ordering and fitting. The gallery shows finished installations and how the cassette types differ once they are in place. Compare the pictures with the product sheet so the cassette and the channels match the window.
Before you order
Measure the window sash, not the wall around it. The mechanism is glued or screwed to the sash, and the side channels should follow the glass so the fabric does not stand out when the window opens. Check that the sash can take the fixing and that the blind can travel with the window when you tilt or open it.
If you want the room as dark as possible, the side channels matter. They close the gap along the edges. Without them a free-hanging roller blind lets light in at the sides, even when the cloth itself is dense. With a cassette and channels the fabric is also protected when the blind is raised, which keeps the colour longer.
Guide, gallery and configurator
If you have ordered before and already know what you need, go straight to the configurator. The guide covers measuring, ordering and fitting made-to-measure cassette roller blinds. The gallery shows fitted examples and the differences between the cassette types we supply.
- Open the cassette roller blind configurator
- Cassette roller blind guide
- Cassette roller blind gallery
- Cassette roller blinds – guides, models and made-to-measure
Technical information
Each product sheet describes sizes, the cassette and fitting for that model.