The gates that provide patio door security are some of the sturdiest gate there are. They have to be since they are protecting the entrance to your house. Different designs are common. Some of the gates are simple while others are much more complicated and intricate. These gates come in different sizes and can be used in standalone houses as well as apartments and high rises. The patio door security is one of the most elemental security measures one must take to protect the house and family from burglars. These gates are movable and are fitted with a lock and key for added security.