UL PRODUCT CATEGORY

Fire-protection-rated Glazing Materials, KCMZ


Guide Information for Fire-resistance Ratings

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USE

This category covers fire-protection-rated glazing materials certified for 3/4 h (45 min), 1 h (60 min), 1-1/2 h (90 min), and 3 h (180 min) fire ratings, or 1/3 h (20 min) fire rating without hose stream as indicated in the individual certifications.

Fire-protection-rated glazing materials are intended for installation in fire windows, fire doors, and fire door frames with transoms and/or sidelights that are provided with suitable glazing frame members.

Fire-protection-rated glazing materials are intended to be installed in accordance with ANSI/NFPA 80, "Fire Doors and Other Opening Protectives," and/or model building codes, in addition to the installation instructions provided by the manufacturer. ANSI/NFPA 80 and/or the building codes limit the use of fire-protection-rated glazing materials to (1) sidelights and transoms in fire door assemblies having a rating no greater than 3/4 h (45 min), (2) to fire windows in the interior of a structure having a rating no greater than 3/4 h (45 min), (3) to fire windows in an exterior wall of a structure having a rating no greater than 3 h (180 min), and (4) to swinging-type fire doors. Fire-protection-rated glazing materials having a rating equal to or greater than the requirements may be utilized in these installations. The installation of glazing materials is intended to be in accordance with the local building code as determined by the Authority Having Jurisdiction.

Authorities Having Jurisdiction should be consulted before installation.

Fire-protection-rated glazing materials are not generally provided by the fire door, fire door frame or fire window frame manufacturer. These glazing materials are normally installed on the job site after the fire door, fire door frame, or fire window frame is installed in the building.

Nominal 1/4 in.-thick wired glass may be used where permitted by the local building code. The maximum exposed area for an individual light should not exceed 1296 sq in. with no dimension of exposed wired glass greater than 54 in., unless otherwise indicated in the individual certifications. The groove depth formed by the framing members used for retaining wired glass should have a minimum depth as shown in the following tabulation.

Max Area of
Exposed Glazing Material
(sq in.)

Min Depth of Groove
(in.)
100 1/2
500 5/8
600 11/16
1296 3/4

Wired glass, 1/4-in. thick, is rated for 3/4 h (45 min) for an exposed area not exceeding 1296 sq in., and rated for 1-1/2 h (90 min) for an area not exceeding 100 sq in. For fire-protection-rated glazing materials other than 1/4-in.-thick wired glass, the maximum exposed area for an individual light, the minimum groove depth, and the rating should be as indicated in the individual certifications.

The 20-minute fire-protection-rated glazing materials tested without hose stream exposure are intended for use in fire windows and fire door assemblies for the protection of openings in walls and partitions as specified in the applicable sections of the model building codes.

The 20-minute rating indicates the duration of fire exposure only. These 20-minute glazing materials have not been subjected to a hose stream exposure.

PRODUCT MARKINGS

Glazing materials bear a marking as described in ANSI/NFPA 5000, "Building Construction and Safety Code," and the "International Building Code."

The marking for glazing materials intended for use in fire doors includes the following information:

The UL symbol with the words "CERTIFIED" and "SAFETY" (when using the Alternate UL Mark, the UL symbol with the word "CLASSIFIED" above the UL symbol)
Manufacturer name or identification
ANSI/UL 10B and/or ANSI/UL 10C
D - H or NH - T or NT - xxx
Where:
"D" indicates the glazing is suitable for use in fire door assemblies
"H" indicates compliance with the hose stream requirements of the standard
"NH" indicates the glazing has not been subjected to the hose stream requirements of the standard
"T" indicates the glazing material has a temperature rating, which is defined as a maximum unexposed surface temperature of 450°F when measured at 30 minutes during the standard fire test
"NT" indicates the glazing material does not have a temperature rating, which is defined as a maximum unexposed surface temperature in excess of 450°F when measured at 30 minutes during the standard fire test
"xxx" indicates the fire-protection-rating period in minutes

The marking for glazing materials intended for use in fire windows includes the following information:

The UL symbol with the words "CERTIFIED" and "SAFETY" (when using the Alternate UL Mark, the UL symbol with the word "CLASSIFIED" above the UL symbol)
Manufacturer name or identification
ANSI/UL 9
OH - xxx
Where "OH" indicates compliance with the fire and hose stream requirements of the standard and "xxx" indicates the fire-protection-rating period in minutes

Unless otherwise indicated in the individual certifications, these glazing materials have not been investigated as safety glazing. In the United States, model codes require that glazing materials used in locations subject to human impact in hazardous (classified) locations comply with the requirements for safety glazing as defined in 16CFR1201, "Safety Standard for Architectural Glazing Materials."

PRODUCT IDENTITY

The following product identity appears on the product:

    Fire-protection-rated Glazing Material

RELATED PRODUCTS

Fire-resistance-rated glazing materials investigated to ANSI/UL 263, "Fire Tests of Building Construction and Materials," are covered under Fire-resistance-rated Glazing Materials (CCET). Fire-resistance-rated glazing materials are intended for the construction of interior fire-resistance-rated walls and partitions and are differentiated from the glazing materials covered under this category by the test Standard and the intended installation application.

ADDITIONAL INFORMATION

For additional information, see Fire-resistance Ratings (BXRH).

REQUIREMENTS

The basic standards used to investigate products in this category are ANSI/UL 9, "Fire Tests of Window Assemblies," ANSI/UL 10B, "Fire Tests of Door Assemblies," and/or ANSI/UL 10C, "Positive Pressure Fire Tests of Door Assemblies."

The fire exposure condition defined in ANSI/UL 9 permits the neutral pressure plane within the furnace to be located at one of two locations. The neutral pressure plane is permitted to be located such that two-thirds of the test sample is exposed to a positive furnace pressure condition. This exposure condition is defined as a positive pressure condition. The neutral pressure plane is also permitted to be located within one inch of the top of the window assembly. This exposure condition is defined as a neutral pressure condition. Using these definitions for furnace pressure condition, ANSI/UL 10B represents a neutral pressure condition and ANSI/UL 10C represents a positive condition.

Fire-protection-rated glazing materials investigated to ANSI/UL 9 are intended for use in fire windows and may be used in fire door assemblies tested under neutral pressure conditions.

UL MARK

The Certification Mark of UL on the product or on the smallest unit container in which the product is packaged 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:

FIRE TESTED UNDER * PRESSURE CONDITION
IN ACCORDANCE WITH #
SEE UL ONLINE CERTIFICATIONS DIRECTORY
For glazing materials tested without a hose stream:

FIRE TESTED UNDER * PRESSURE CONDITION
TWENTY-MINUTE RATING
TESTED WITHOUT HOSE STREAM
SEE UL ONLINE CERTIFICATIONS DIRECTORY

* NEUTRAL or POSITIVE


# ANSI/UL 9, ANSI/UL 10B and/or ANSI/UL 10C

Alternate UL Mark

The Classification Mark of UL on the product or on the smallest unit container in which the product is packaged 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:

FIRE-PROTECTION-RATED GLAZING MATERIAL
FIRE TESTED UNDER * PRESSURE CONDITION
IN ACCORDANCE WITH #
SEE UL FIRE RESISTANCE DIRECTORY
Control No.

The Classification Mark for glazing materials tested without a hose stream includes the UL symbol, the word "CLASSIFIED" above the UL symbol (as illustrated in the Introduction of this Directory), and the following additional information:

FIRE-PROTECTION-RATED GLAZING MATERIAL
FIRE TESTED UNDER * PRESSURE CONDITION
TWENTY-MINUTE RATING
TESTED WITHOUT HOSE STREAM
SEE UL FIRE RESISTANCE DIRECTORY
Control No.

* NEUTRAL or POSITIVE

# ANSI/UL 9, ANSI/UL 10B and/or ANSI/UL 10C

* * * * * * * * * * * * * * * * * * * * * * * * *

UL, in performing its functions in accordance with its objectives, does not assume or undertake to discharge any responsibility of the manufacturer or any other party. UL shall not incur any obligation or liability for any loss, expense or damages, including incidental or consequential damages, arising out of or in connection with the use, interpretation of, or reliance upon this Guide Information.

Glazing Materials, Fire-protection Rated
Last Updated on 2013-05-16
KCMZ.GuideInfo KCMZ Active 20130516 20081222

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