Features: High-grade safety conservation:Atomstack Maker FB2 Plus rigid protective case, the whole use of three layers of protective materials: 900D high-density flame retardant Oxford cloth + honeycomb board + professional fireproof cloth, can be flame retardant under open fire in wood for more than 3 minutes. Rigid case for long-term use without collapse. Large capacity:1170*730*310mm large capacity, perfectly compatible with 99% of semiconductor laser engraving machines on the market that use extension bars. Lightweight and easy to store: Adopts a no-assembly box design, which can be assembled in 3 minutes and can be quickly disassembled for storage. No smelly & Protect Your Health: With the Atomstack Maker FB2 Plus case, you can isolate the pollutants produced during the laser cutting: PM2.5/PM10/formaldehyde/TVOC, etc., and exhaust the harmful gases outside through the extension rod. Health is priceless. For the health of you and your family, please do your best to protect yourself. New Air Outlet Design: Atomstack Maker FB2 Plus is of unique double side fan hole design, no more worry about the laser cutting workplace. Using atomstack maker hood and air purifier, you no longer need to worry about fume exhaust problems and air pollution. You can work safely in your garage, basement, workshop. Highly Adaptable: FB2 Plus box can be compatible with all Atomstack and Ortur, NEJE, Xtool and products of other brands, with the corresponding wiring slots reserved. Specification: Model: FB2 Plus Power supply: 12V 3A Volume: 1170730310mm Extension tube length: 2M Exhaust fan speed: 7500 RPM Packing List: 1 x FB2 protective box set 1 x Exhaust pipe 1 x Metal mesh cover 1 x Exhaust fan 1 x DC12V power supply 4 x M4*50 screws Nut combination 1 x Throat hoop 1 x Flange fan 1 x H3 Allen key 1 x Flat-blade screwdriver