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maintenance workers or engineers wearing protective helmets and visibility yellow vests examining a new ac unit fan outdoors and taking notes - airconditioning roof stock videos & royalty-free footage00:31Maintenance workers or engineers wearing protective helmets and visibility yellow vests examining a new AC unit fan outdoors and taking notesAir Conditioner, HVAC, Rooftop
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maintenance workers or engineers wearing protective helmets and yellow vests examining a new ac unit fan on the roof outdoors together and taking notes - airconditioning roof stock videos & royalty-free footage00:23Maintenance workers or engineers wearing protective helmets and yellow vests examining a new AC unit fan on the roof outdoors together and taking notesAir Conditioner, Rooftop
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