Fully reversible windows rotate 180 degrees through the use of a unique hardware. Some hardware types feature a button which when pressed allow the window to open further and generally the operation is as follows:

 

• Open the window to the first restricted position by turning the handle and pushing the window open.

• To open the window to the second restricted position, locate and press the button whilst pushing the window open.

• To aid cleaning press the button again and push window open to an arms length then continue reversal by pulling window from the top until the window engages the restrictor.