The Moveable Retractable Unit is 7 metres long x 5 tiers high. It will take 60 x SG13-868B seats. The decks are carpeted with commercial carpet for durability. The depth of the deck is 900mm & the riser is 300mm. The Moveable Unit is a good option if you require more flexibility. They move by trolley set & come with hand rails at the top & two sides.