From publisher blurb:
Modular Kit: Dark Starship Rooms is a printable Sci Fi tileset compatible with any RPG/Skirmish game. It can be used as a standalone set, or combined with any same-scale tileset.
The set comprises 10 different tiles that can be printed multiple times and arranged in limitless combinations to produce futuristic spacecraft interiors, battle cruisers, scientific research facilities, colonies, space stations, military outposts and much more. Contains nine tiles sized 10x14, and one tile at 10x21. Can be used on their own, or combined seamlessly with Dark Starship Corridors to make huge layouts. Ideal for Star Wars, Firefly, Warhammer 40K and other sci-fi games.
Please note - there is no grid/gridless version. The floor has an integral grid built into it (i.e. the people that made the Starship used square metal panels for their floor), so there is a grid built into the map.