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Firemiser™ Insulated Fire Doors

Model ERD20


One Door - Many Benefits

Provide UL rated fire protection plus security, sound attenuation, environmental separation and smoke control with the Firemiser insulated fire door from Cornell.

Achieve Rolling Steel Security with up to 4 hours of UL Classified Fire Protection, plus:

Practical Design Applications

Listings: UL 4 HR, 3 HR, 1 1/2 HR, 1 HR and 3/4 HR Classified labels. Flame spread and smoke development index factors for Firemiser's mineral wool insulation are zero.

Sizes: Standard construction for openings up to 30' wide, 22' high. Large openings to 34' wide, consult factory.

Material and Finishes: Exterior / Interior curtain skin - galvanized steel with exclusive GalvaNex™ finish in light gray, tan or white, SpectraShield® powder coating as an available option, or 300 series stainless steel with #4 finish. Cast iron endlocks / windlocks are required per UL procedure. Additional Material and Finishes information

Mounting: Face of wall or between jambs configurations in both interior and exterior walls. Approved wall types for the mounting of insulated fire doors include masonry or structural steel jambs.

Operation: M100 motor, chain or crank operating systems are recommended for ease of testing and controlled automatic closing speed. Additional Operator Information.

Specified Wind Load: Insulated fire doors can be designed to meet specific PSF wind load requirements.

Seismic Performance Validation: Cornell can provide project specific seismic calculations for all insulated fire doors that are mounted Face of Wall or Between Jambs to steel or masonry. Seismic performance validation is per ASCE 7-05.


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24 Elmwood Ave., Mountaintop, PA 18707 | Tel 800.233.8366 | Fax 800.526.0841 | Email cornell@cornelliron.com

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