A door which is useful for buildings, where there is heavy rush of foot traffic and also air conditioned buildings known as:
ARolling steel door
BRevolving door
CSwing door
DSliding door
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Related Questions:
The verticals sides of door and window opening in a wall is called
A vertical member of the frame which divides the window vertically is
The exposed vertical surface perpendicular to the door frame is known as
Push pull type rolling steel door is used, when:
A cut in frame of a door to receive the shutter is called: