What do you call the type of door used in garages and storefronts? The best I can come up with is shutter, put I Googled and checked Wikipedia for any clues and came up with nada. Wikipedia used roller door, which is the closest I can come, but this is in the future where the doors don't roll down from the ceiling. Does anyone know what they're called or can come up with a good word? I'd hate to call it a garage door or a storefront door because the setting is netiher a garage nor a storefront. It's a hangar. The problem is I'm not sure if the average reader is familiar enough with hangars to know what I'm referring to if I mention "hangar door."