On Wednesday, February 20, 2013 6:54:03 PM UTC, Dave West wrote:
Someone with a basement flat with old wooden frame vertical sliding sash

windows wants some simple to fit security device to enable the window to be

left open safely a couple of inches whilst no one is in the flat.



Grateful for an suggestions on a simple to fit device.

I've used these on mine in the past.

http://www.diy.com/nav/build/doors-w...?skuId=9286524


or search for 5010608011907 at diy.com.