Decide between a smoke curtain and a fire-rated rolling shutter for a counter/pass-through opening.

Steps

1. Determine the actual hazard being addressed: smoke containment across a corridor/opening (relevant to NFPA 105 smoke door assembly requirements) versus fire-resistance rating of the opening itself (relevant to NFPA 80 and the door's UL fire-test listing).
2. If a fire-resistance rating is required for the opening, specify a listed fire-rated rolling shutter (tested per the applicable UL fire-door standard) rather than a smoke curtain alone.
3. If only smoke control (not fire rating) is required for the counter opening, a listed smoke curtain assembly evaluated to NFPA 105 provisions may be appropriate.
4. Confirm the AHJ's basis for requiring protection at that opening (fire rating, smoke rating, or both) before finalizing the product choice, since some counter openings require both.
5. Verify the selected product's actual listing documentation states the specific opening application (counter/pass-through) is within its tested scope.