I was scratching my head about this door that I saw in a retail store the other day, so I’m looking for theories from you.  The exit door to the left of this one was probably sufficient for the space (maybe there was a rear door too), and I’m guessing the blocked door was not required, but why the signage?

Fifteen years ago I saw a door marked “This is not a door” on the outside, and a firefighter commented that the reason was to let firefighters know that they should not waste time trying to access a building through inoperable doors during a fire.  That made sense to me.

So why is the door in the photo marked on the INSIDE?  Is there a reason for this?

Blocked retail door

Blocked retail door

Blocked retail door

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