LITKO have released a new 15mm Mini Corridor System terrain set.
From their announcement:
The Mini Corridor System is designed for use with your 15mm scale miniatures, each tile section is designed with 20mm sized corridor, junction and room tiles that interlock together to make a miniatures game layout. Each component is designed to lock with each other, creating a stable map of tiles that can be used to represent spaceship corridors to ancient dungeons.
The corridor system allows you to pick and choose just the parts you want, and get just the right parts you need.
Visit litko.net to see all the possible configurations.