A rack assembly that includes first and second side wall assemblies, a mid center bar extending between the first and second side wall assemblies, first and second front cradle bars extending between the first and second side wall assemblies, first and second male nesting members secured to the top of the first side wall assembly, first and second female nesting members secured to the bottom of the first side wall assembly, third and fourth male nesting members secured to the top of the second side wall assembly, and third and fourth female nesting members secured to the bottom of the second side wall assembly. A front cradle space is defined between the first and second front cradle bars and a rear cradle space is defined between the first and second rear cradle bars.