MDF-DU700ZHA-PA Configuration for 3″ Boxes UF-433, UF-443 September 22, 2025 Maximum Rack Capacity per Freezer: 24 regular racks: (12) UF-433 (12) UF-443 Maximum Boxes per Rack: UF-433 = (12) boxes UF-443= (16) boxes Maximum Boxes per Freezer: 336 boxes