A letter to remove personal property tells the person about everything that was left behind. The letter must also tell the person how long they have to get the things back, how much it will cost to store them, and when they will be thrown away.
Most of the time, landlords use this type of letter to legally let former tenants know about personal belongings they left behind. It is illegal to get rid of personal belongings without official notice. The letter is a legal notice to the former tenants, and it needs to say where the items are or how to get in touch with the landlord.