挡烟垂壁 smoke screen

烟道挡板 flue damper ; stack damper ; flue shutter

防烟挡板 smoke damper

烟气挡板 gas baffle ; gas damper ; smoke damper

烟囱挡板 flue damper

挡烟罩 hood baffle

气压式挡烟系统 barometric damper system

烟风挡 chimney damper

烟风挡板 air & flue gas damper