Inspection Mirror open ended 1x4 and close ended 1x5

A gridfinity bin for an inspection mirror. It comes in a 4 by 1 open ended bin, or a 5 by 1 closed end bin. I printed and used the 4 by 1 as my mirror only just fits a 4 by 1 space and found the extra wasted space to be unacceptable. But I've provided it in case you prefer its look or wish to remix it and add something there.