![](http://www.alamy.com/thumbs/6/350218B5-A979-466E-9029-4683678A9A9B/H2ATM1.jpg)
old ventillation fan
close up of an old ventilation fan
Size: 3204px × 3284px
Location: Singapore
Photo credit: © zkruger / Alamy / Afripics
License: Royalty Free
Model Released: No
Keywords: aged, airflow, blade, blades, closeup, color, dirty, environment, fan, green, grill, industrial, ventilation, vertical, weathered