2:44
Workers installing a duct vent in a shaft, while conversing with each other.
1:52
Workers installing a duct, hitting and breaking plaster many times.
2:02
Workers installing a duct, stabbing through and breaking plaster with sparse male voices.
0:24
Elevador Predial Entrando Ventilador Porta Fecha e Abre 3 Andar Corredor
0:38
Elevador Predial Campainha Acensorista Diz Terreo Ventilador Porta Abre e Fecha Desce 3 Andar Abre Andar Rua
0:42
Elevador Predial Com Acensorista Ventilador Porta Fecha e Abre 2 Andar Fecha e Abre 3 Andar
0:18
Turning on an old computer with noisy ventilator
0:07
Ventilator pump mechanism up and down in a quiet hospital room.
0:02
A close perspective recording of a hospital ventilator breathing in and out.