There is a general belief that elevator doors are fire rated so your curtain does not need to be. The truth is that because the elevator door is behind the curtain and the gap that the smoke curtain is to protect between the elevator door and frame is where hot gases, which can be over 1000 degrees F, could penetrate a curtain and create a smoke stack effect. Therefore a smoke curtain like ours that is rated up to 1800 degrees F makes the most sense to utilize.