Separate open or dual open;

Max pull/push force is 300N;

Retentionforce is up to 2000N;

Stroke:250-380mm

For heavy window no more than 4000mm;

Sashes within 800mm,if add sashes,need t use dualchain opener;

Simplicity of installatioon,the tube can be mounted inside the wal or into the aluminum frame;

Col can be tailor-made;