WarLock Tiles: Doors & Archways
WarLock Tiles: Doors & Archways - Rules of Play says:
With Doors & Archways, you'll have everything you need for multi-room adventure scenarios. Mix and match with other WarLock Tiles for even large adventure setups! Doors & Archways is compatible with most 3D terrain sets and features an intergrated clear plastic base that sit on top of tiles, vinyl maps or tabletop for ultimate flexibility in gaming.