The FABOOL Laser Mini is usually 11.8 inch × 9 inch (30 cm × 23 cm), but with the expansion frame set (frames, harness, timing-belt), the Laser Mini can be extended up to 39.3 inch × 39.3 inch (1 m × 1 m). The expansion frame kit is recommended for when you want to work with larger materials, but you don't want higher laser power.