Multi-layer fire curtain

A multi-layer rolling fire curtain assembly positionable about an opening, comprising:

• a rotatable curtain roller positionable about the opening;
• first and second guide channels arranged along a right-side edge and a left-side edge of the opening, respectively,
• a flexible multi-layer fire curtain comprising fire resistant material and being configured to be wrapped about the curtain roller and to be deployable from the curtain roller between a retracted position and an extended position, the multi-layer fire curtain having a first end connected to the curtain roller, and a second end connected to a bottom bar, the multi-layer fire curtain having:
• an inner curtain layer arranged in contact with the curtain roller and having a first width W1 between first and second lateral edges, and
• an outer curtain layer arranged opposite the inner curtain layer, wherein the outer curtain layer has a second width W2 less than W1 and is longer than the inner curtain layer to form a baggy area therebetween;
• and
• wherein the multi-layer fire curtain is configured and arranged so as to be received in and guided along a respective one of the first and second guide channels.