Focusing your Co2 laser Manual and Auto Focus Monport 60w 20 x 28 lightburn red dot manual focus co2 laser engraver cutter net weight 319.7 lbs (145 kg). Venting Exhaust Duct 4 ft. 60W CO2 laser tube with an estimated lifetime of up to 2,000 operation hours depending on power setting usage and water cooling… Read the full article