The full height iconostasis became standard in the 15th century .
The full height iconostasis probably owes more to 14th - century Hesychast mysticism and the wood - carving genius of the Russians than anything else .
The full height iconostasis became standard in the 15th century , and probably owes more to 14th - century Hesychast mysticism and the wood - carving genius of the Russians than anything else .