What is the name of the device that allows the door to be opened to one side only?

If you look at the bank door, you can only open it in one direction.

You don't necessarily want a complex form like a bank, but what's the name of the device that allows you to open the door to one side only?

483 2017-03-11 Gentleman

popular Why does it say that your license has expired on your phone?

popular How can I connect to watch a video on my phone on TV?

popular Is hair spray not allowed on the plane at all?

popular How do I recycle and recycle foil like cooking foil?

popular What is the nationality of Minnie?

Same Tag I heard that using a carpet reduces dust, is it true?

Same Tag Do you have any recommendations from IKEA?

Same Tag How do you do interior design when you start a store?

Same Tag Is there a way to expand the apartment and catch the heavy rainstorm?

Same Tag Do I have to do joint construction when I move into a new apartment?

Same Time I can't play Overwatch. What's wrong?

Same Time What is the name of the device that allows the door to be opened to one side only?

Same Time I forgot my bicycle password, how can I solve it?