The blinds' slat size - 25mm, 35mm or 50mm?

The blinds' slat size - How to choose

Modern wooden venetians come in three slat sizes:

• 25mm slat
• 35mm slat
• 50mm slat

The most popular wood slat size is 35mm at the moment. If you are buying for multiple windows then stick to the same slat size throughout the room and preferably house.

It would be normal to use 50mm on a large window (say a patio door) and 50mm also offers a more colonial feel.

25mm slats suit a smaller window, whilst 35mm seems to strike the best balance on most windows.

What are the compacted stack sizes?

Something you may need to consider is what is known as the “stack”. When you raise the blind the slats collect at the top of the window all bunched up. The smaller the slat size, the more slats you will need to cover the window, and so the bigger the stack when these are all pulled up. If you have fanlight windows these could be obstructed by the stack, so it may be better to go for 50mm over 25 or 35mm in this case.  Click here to find out more about the blinds stack size.