We needed some interlocking tiles to go under our mattresses in our tiny house to keep frost and mold from forming. These tiles are approximately 12"x12"x0.75" and allow space for air to flow, while also being able to support mattresses and weight. They lock together with the included tab; we use two tabs per side.

Update: Added a tile that has tabs built into it (Interlocking_Floor_Tile_v02) .

These were sliced with PrusaSlicer and printed on a Creality Ender 5 Plus