To buy genuine blinds for Roto windows, you should know the size and series of your Roto roof window. Remember: you do not need to measure the window – you just need to find the Roto window code.
Note: Roto Frank company has changed the size markings for its roof windows. Previously, the size was indicated as, for example, “07/11”. From now on, it is “074/118”. Both markings refer to the same window size.
How to find the Roto window size code/serial number?
The code may be inside a red, grey or blue casing, or sometimes simply on a metal plate located on the sash (the part of the window that moves) – see the pictures below:

Depending on the age of your Roto window the data plate and its position on the window varies, but it holds relevant information:

How to Order Genuine Roto Blinds?
So, you already have your Roto window size and the Roto window code. What next?
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Choose the type of blind you’re interested in (for example, visit
this Roto blackout blind page).
Then, using the menu on the right side of the page, select:- the colour of the fabric,
- your Roto window size,
- the colour of the side trims.
Next, fill in the Roto Window Code field as well.
