A door made of steel plates and hinges so as to shrink it to one side is called
Arolling shutter
Bsliding door
Ccollapsible door
Dfolding door
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Related Questions:
A recess made inside the doorframe to receive the door shutter is:
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____________ window permits more light and air into the building
A depression cut in the frame of a door to receive the shutter of the door is known as
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