From the evolution of the T-72 and T-90 turret filler packages. Package Ob 184: 21 mm plate, 6 mm rubber sheet, 3 mm metal plate. At the rear in the main area 45mm plate.
Package 184 (T-72 m. 1989) and 188 (T-90) 50 mm plate 6 mm rubber 4 mm plate. At the back 40 mm plate. pic.twitter.com/4af29pURcb

— Andrei_bt (@AndreiBtvt) April 24, 2024