We offer air purifiers - alpha - 300. make - atlanta health care, u.s.a. model - alpha - 300 type - 4 stage with ioniser. purification process - 4 stage purification process, primary filter hepa filter photo catalyst activated carbon negative ions - produces 15,00,000 ionsc.c noise levels - very low less than 40 db controls - automatic microprocessor based remote control - available memory function - present power rating - 220v ac 60 hz 40 watts area covered - 300 sq. Ft. Approx. gross weight - 2.9kgs rate of absorbed co2 - 50 ppm.