Have fitted these to all of my uPVC windows as they have no stays to prevent them being opened fully. These window chains are just the job. Allow enough opening to provide decent ventilation and flow of air, prevent the windows, particularly ground floor ones, from being opened fully unless the chains are unlocked and are an additional security feature against unauthorised entry at the front of the house when we are out in the garden at the rear. Even when windows are closed and locked on the integral locks, they are an additional security barrier. All this and also the safety feature of prevention of small children falling out of opened windows at any floor level. Can't fault them. Fitted in less than 10 minutes each. Good product. Well pleased.
Verified purchase: Yes | Condition: New
These are great. Allows window to open enough to let air in. Look great and very easy to fit! Thumbs up from me.
Verified purchase: Yes | Condition: New
Very pleased with product, extremely useful as I live in a ground floor flat and I feel secure with my window open now.
Verified purchase: Yes | Condition: New
Verified purchase: Yes | Condition: New
better than I exspected
Verified purchase: Yes | Condition: New
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