What are the requirements for an opening in a smoke barrier door in existing healthcare occupancy?

Smoke Barrier Doors are required to be fire-rated glazing or wired glass panels. In addition to using listed fire-protection-rated glazing (or compliant wired glass), vision panels in these doors are limited in total area, typically to 1296 square inches per door leaf. Critically, openings such as louvers, grilles, or transfer ducts are generally prohibited to maintain the door’s smoke-blocking capability. The glazing material and its frame must also be listed for use in a smoke barrier door assembly. 19.3.7.6, 19.3.7.6.2, 8.5