Equipped with exhaust fan and pipe to speed up the air circulation, and make the laser work more fully, while eliminating smoke and odor. Flame-retardant glass fiber cloth, plus heat insulated silicone coating, with higher fire resistance temperature. Rserved touch screen velcro opening and transparent sight window, more convenient to use. 27.5"27.5"12.99/700x700x330 mm large size space, suitable for all powers of Ray5 and most laser engraving machines on the market. Comes with clear assembly instructions for easy assembly in 10 minutes.