Classfied and labeled by Underwriters Laboratories, Inc.® as Design Number U554 and Underwriters Laboratories of Canada as Design Number W495. Frame tests performed in accordance with UL 263 / ASTM E-119 (60-120 minutes), NFPA 251.
Maximum Allowable Size Information
|Rating||Max. Exposed Glass Area Per Piece||Max. Exposed Glass Single Dimension||Maximum Frame Dimension|
|45 Minutes||31.25 sq. ft. (4,500 sq. in.)||95 1/4"||144"*|
|60 Minutes||31.25 sq. ft. (4,500 sq. in.)||95 1/4"||n/a**|
|120 Minutes||24.0 sq. ft. (3,456 sq. in.)||96"||n/a**|
Note: Exposed area and size limitations are calculated from the frame side as DLO.
* 45-minute window systems are classified as an Opening Protective as per UL 9.
** 60- and 120-minute tests conducted per UL 263 / ASTM E-119. Therefore assembly is
classified as a wall assembly, and not subject to "opening" area limitations.
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