Packaging solution “Tetris” offers comprehensive solution for various types of bus double seats. The overall height of particular pallet unit during transportation of two stacked double seats in former package had exceeded dedicated maximal height of commonly used LKW and it requests using lowdeck LKW types. Suggested concept allows effective using out of full range standard LKW inner height with collecting the original number of packages in EUR pallet ground dimension = transportation cost benefitting. The concept is made of wooden supports and triple wall corrugation casing divided in identical halves. This comprises 2 doubleseats packed in one unit. Particularly, one half case to be used in one double seat packaging version if needed. The process of packaging becomes as each double seat is firstly singly completed in the half case and both halves to be in “Tetris Principal” shaped together into transportation unit.