Which constraints ensure that only one size plant is built at a location?

$D$$16$:$D& $F$16$:$F$$17$

$$D$$$16$:$$D$&$17=$$$F16$:$$F$$$17$

$$Z29$:$$237$$$AB$$$29$

$$B$$$38$:$$Y$$$38$$$B$$$40$:$$Y$$$40$