The linkage hardware and handles arranged around the window sash can operate various functions indoors. When the window sash is closed, the surrounding areas are fixed to the window frame, so the safety and anti-theft performance are excellent.

The operation is simple and can turn the outside of the window sash into the interior. Makes cleaning the exterior surface of your windows convenient and safe. 4. Practicality: It avoids occupying indoor space when the inward-opening window is opened, making it inconvenient to hang curtains and install lift-type clothes rails.

Through multi-point locking around the window sash, the sealing and thermal insulation effects of the doors and windows are ensured.