Door lock for children

My little son opens all the doors that are within his reach. Commercial blockers are difficult to open for the child and me too. This simple lock is difficult for the child and is easy for me. It is designed for 18 mm and 15 mm thick doors (it has a free space of 1.5 mm per side). If you need another thickness, let me know and I will gladly do it.

Mi pequeño hijo abre todas las puertas que están a su alcance. Los traba puerta comerciales son difíciles de abrir para el niño y para mí también.