422.214.171.124 Exterior Unit Standards
All exterior window units, skylights, exterior louvers and exterior door units including vision panels and their anchoring systems shall be impact resistant or protected with an impact-resistant covering meeting the requirements of the Testing Application Standards (TAS) 201, 202 and 203 of this code in accordance with the requirements of Sections 1626.2 through 1626.4 of this code. The impact resistant coverings may be either permanently attached or may be removable if stored on site of the facility.
The location or application of exterior impact protective systems shall not prevent required exit egress from the building.
When not being utilized to protect the windows, the permanently attached impact-resistant coverings shall not reduce the percentage of the clear window opening below that required by this code for the patient room.