LuLu Decor, Cast Iron Door Stop, Door Stopper, Doorstops (Square 5.20 lbs)

How tall is the key stopper?

would this rust from the rain if used outdoors?

Can the year on it be customised? For example to have the actual year was built?

How much does it weigh? Item weight say 3.3 and then I'm reading 5? This is for inside my bedroom door to keep shut because my cat manages to open it