Vale Blinds

01949 845399



25+ Years Experience

35+ Years Experience

Reliable Delivery Service

Reliable Delivery Service

High Quality Materials

High Quality Materials


Roto Information

Roto Logo

Size Finder

First of all you must find the size and series of your Roto window. Remember: you do not need to measure the wndow - you just need the Roto window code.

The code may be inside a red, grey or blue tab or sometimes on a metal plate located on the sash (the part of the window that moves) see the images below:

Colt Roto plate   Colt Roto plate

The serial number will be similar to the following examples:

  • 320 AG 5B7...
  • 339 DC 7N11...
  • 435 WDF 7/9...
  • 435 HBT 7/11...
  • 735 HBT 5/9...
  • 847 HBK 7/14...

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

Roto WDF Series 8 4 3

Roto Series 7 3 6

Roto Series Q Q4

If you are having problems locating the serial number please do not hesitate to contact us on 01949 845399 or at

What does the serial number mean?

The first 3 numbers listed in the example above tell you the series of the window. Each series requires a different blind.

Window series

The 435 series is a timber window with a centre pivot.

The 735 series is available in timber or PVC and pivots at the top third.

IMPORTANT: Blinds for series 4 and 7 (whether timber or PVC) are compatible!

The 320/339/559 all correspond the 320 series window. This is a timber window with a centre pivot. This series window has now been discontinued; however we do still sell blackout blinds and roller blinds to suit these common old style windows.

The 800 series is a 'means of escape' window and is top hung.

So to sum up! There are 4 different series blinds to order:

  • 435/735 series
  • 320 series
  • 800 series
  • Q & Q4 series

NOTE: The letters in the serial number you do not need to worry about. They can tell us the year the window was made and what material it is made from.

Please contact us or complete the form below to fill out a special Colt Roto enquiry form. A blind specialist should get back to you within 24 hours & usually quicker!


Roto Information Request

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Get in Touch

Telephone: 01949 845399


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Where affordability never compromises quality

“Where affordability never compromises quality”

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