KEYSTONE CLEAN AIR SOLUTIONS

metal vent covers for HVAC ducts for use in laboratories; metal vent covers for cleanrooms use in the manufacture of electronics, semiconductors, pharmaceutical products and medical products

Heat registers for use in laboratories; Heat registers for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Heat registers for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; Ventilation fans for use in laboratories; Ventilation fans for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Ventilation hoods for use in laboratories; Ventilation goods for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; Ventilation goods for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products, namely, ventilation fans and hoods; locally induced air-conditioners for industrial purposes for use in laboratories; locally induced air-conditioners for industrial purposes for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air filters for air conditioning units for use in laboratories; air filters for air conditioning units for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air filters for air conditioning units for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; axial-flow fans for air-conditioning for use in laboratories; axial-flow fans for air-conditioning for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; axial-flow fans for air-conditioning for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; air filtering units for removing dust, smoke and allergens from the air for use in laboratories; air filtering units for removing dust, smoke and allergens from the air for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air filtering units for removing dust, smoke and allergens from the air for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; filters for air extractor hoods for use in laboratories; air filters for air extractor hoods for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air filters for air extractor hoods for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; high efficiency particulate air (HEPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in laboratories; high efficiency particulate air (HEPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; high efficiency particulate air (HEPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; minimum efficiency reporting value (MERV) air filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in laboratories; minimum efficiency reporting value (MERV) air filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; minimum efficiency reporting value (MERV) air filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; ultra low particulate air (ULPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in laboratories, ultra low particulate air (ULPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; ultra low particulate air (ULPA) filters for heating, ventilation and air conditioning installations and specially adapted parts therefor for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; ceiling-recessed and ceiling-suspended heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, and air conditioning fans, air diffusers, as well as suspended and recessed ceiling tracks specially adapted for housing such items sold as a unit for use in laboratories; ceiling-recessed and ceiling-suspended heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, and air conditioning fans, air diffusers, as well as suspended and recessed ceiling tracks specially adapted for housing such items sold as a unit for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; ceiling-recessed and ceiling-suspended heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, and air conditioning fans, air diffusers, as well as suspended and recessed ceiling tracks specially adapted for housing such items sold as a unit for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; integrated heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, air conditioning fans, air diffusers, as well as work benches and work tables specially adapted for housing these items sold as a unit for use in laboratories; integrated heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, air conditioning fans, air diffusers, as well as work benches and work tables specially adapted for housing these items sold as a unit for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; integrated heating, ventilation and air conditioning (HVAC) systems comprised of ceiling lights, spotlights, and downlights, light fixtures, ceiling fans, electric fans, ventilating fans, air conditioning fans, air diffusers, as well as work benches and work tables specially adapted for housing these items sold as a unit for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; laminar air flow diffuser (LFD) being parts of clean room and ventilating installations for use in laboratories; laminar air flow diffuser (LFD) being parts of clean room installations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; laminar air flow diffuser (LFD) being parts of clean room installations and ventilation installations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; air flow diffusers for use in laboratories; air flow diffusers being parts of clean room installations used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air flow diffusers being parts of clean room installations and ventilation installations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; specially adapted structural parts for air flow diffusers being parts of clean room installations and ventilation installations for use in laboratories; specially adapted structural parts for air flow diffusers being parts of clean room installations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; specially adapted structural parts for air flow diffusers being parts of clean room installations and ventilation installations for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; air flow diffuser arrays being parts of clean room installations and ventilation installations for use in laboratories; air flow diffuser arrays being parts of clean room installations for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air flow diffuser arrays for use in healthcare facilities, namely, in air flow diffuser arrays being parts of clean room installations and ventilation systems for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; laminar air diffuser (LFD) arrays being parts of clean room installations and ventilation installations for heaters, ventilators, and air conditioners for use in laboratories; laminar air diffuser (LFD) arrays being parts of clean room installations for heaters, ventilators, and air conditioners for use in laboratories for heaters, ventilators, and air conditioners for use in cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; laminar air diffuser (LFD) arrays being parts of clean room installations and ventilation installations for heaters, ventilators, and air conditioners for use in healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms; air extractor fans and hoods for heating ventilation and air conditioning installations and specially adapted parts therefor for use in laboratories; air extractor fans and hoods for heating, ventilation and air conditioning installations and specially adapted parts therefor for use cleanrooms used in the manufacture of electronics, semiconductors, pharmaceutical products and medical products; air extractor fans and hoods for heating, ventilation and air conditioning installations and specially adapted parts therefor for use healthcare facilities, namely, in operating rooms, patient rooms and hospital isolation rooms