Hi! Is it cast iron, fiberglass, etc.? The practical parts are disconnecting the water and drain. Be sure the water is off. If it won't fit through the door, it can be broken apart or cut apart, depending on the material. A picture and more information would help me be more specific.🤔
My cast iron broke in three pieces with a sledge hammer. Just enough to get it through the door or out the window.
Not sure about steel.
i don’t remember how I removed the fiberglass; maybe disassembled it.
Try this method: https://home.howstuffworks.com/home-improvement/repair/how-to-remove-bathtub.htm
Hope this Helps! Jeremy - https://pahjodesigns.com