[Record-protection Devices] File-room Doors, Class 350, Insulated, RWWR

See General Information for Record-protection Devices


This category covers file-room doors consisting of an assembly of insulated doors closing into and interlocking with an insulated frame and equipped with a locking mechanism. These doors are effective in withstanding:

1. A standardized fire of controlled extent and severity for at least 1 h (reaching 1700°F) or 1/2 h (reaching 1550°F) without exceeding an interior temperature of 350°F during or after the fire exposure, 36 in. from the unexposed face of the door or 6 in. to the side from the door joints, when installed in accordance with the manufacturer's instructions.
2. Application of a standard hose stream and reheat for 1/2 of the classification period without destroying the usability of paper records stored in the file room.

File-room doors are intended to be installed in file rooms constructed as specified in ANSI/NFPA 232, "Protection of Records." A file room is a fire-resistive enclosure in a fire-resistive building, the enclosure having less fire resistance than a standard vault. The enclosure is intended to be used exclusively for the storage and handling of records.


The following product identity appears on the product:

    Insulated File-room Door, Class 350


See Record-protection Devices (RWIT) and Fire Protection Equipment (AAFP).


The basic standard used to investigate products in this category is UL 155, "Tests for Fire Resistance of Vault and File Room Doors."


The Certification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Certification and Follow-Up Service. The Certification Mark for these products includes the UL symbol, the words "CERTIFIED" and "SAFETY," the geographic identifier(s), and a file number.

Additional Certification Markings

Products covered under this category are additionally marked with the following information:

RATING: CLASS 350 ____ H

Alternate UL Mark

The Classification Mark of UL on the product is the only method provided by UL to identify products manufactured under its Classification and Follow-Up Service. The Classification Mark for these products includes the UL symbol, the word "CLASSIFIED" above the UL symbol (as illustrated in the Introduction of this Directory), and the following additional information:

RATING: 350 — HR.

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Last Updated on 2013-05-16
RWWR.GuideInfo RWWR ACTIVE 20130516 19960830

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