the key to/for/of this door

[Nathan Mckane]

Which preposition is correct?

Where is the key to/for/of this door.

Thanks.

 

[bhaisahab]

Which preposition is correct?

Where is the key to/for/of this door.

Thanks.

They are all possible.

 

[Rover_KE]

Bahaisahab is correct.

You might find this discussion interesting:

Key to the door or key of the door? - WordReference Forums

Rover