The Fellowship of the Ring Wherein an Oxford don and his ragtag army of fans turn a fairy tale about hobbits into the ultimate virtual world. Can any movie ever do it justice?
A dormer is a structural element of a building that protrudes from the plane of a sloping roof surface. Dormers are used, either in original construction or as later additions, to create usable space in the roof of a building by adding headroom and usually also by enabling addition of windows.
One Whirlybird alternative that is worth considering is a solar-powered roof ventilator. As its name suggests, solar-powered ventilators or solar roof vents is a type of roof ventilator that relies on solar energy.