Underwriters rolling steel doors can be installed on openings requiring fire labeled closures. In the event of fire these doors will close automatically upon the melting of the fusible link, and/or release by smoke detection devices, and prevent the passage of flame and smoke. Under normal usage they operate with the same ease as service doors. Thru wall fusible links are available as an optional item.

Underwriters doors may be operated manually, by hand chain, by hand cranks or by motor operation.

Labels are available on doors up to 120 sq. ft. with no greater dimension than 12’- 0” in width or height. Oversize certificates can be furnished for doors up to 576 sq. ft. with no greater dimension than 24’- 0” in width or height.

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