13mm Stack height. (supplied as a pair) Prices start at £7.00
Two types available: Top hung & Side hung.
To measure the stack height, remove the stay, close it and measure the thickness. It is usually 13mm but if it is any different (say 17mm) then give us a ring.
Windows that swing open from the top are classed as top hung (even though the stays are fastened to the side of the frame). Windows that swing open from the side are classed as side hung (even though the stays are fastened on the top and bottom of the frame)