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Home / Assemblies / UL U237
UL U2373-hr Fire RatingWallLoad-BearingSTC 60
Steel StudMulti-Layer GypsumFiberglass BattLoad-Bearing WallHigh STCDesign

Steel Stud Wall — 3 layers 1/2" Type X

UL-listed 3-hour fire-rated steel stud wall assembly. 3-5/8" steel studs at 16" o.c. with R-13 fiberglass batt, 3 layers of 1/2" Type X gypsum board each side.

Cross-Section Diagram

123456788.13"WALL ASSEMBLYSECTION · NOT TO SCALE8 LAYERSsee legend for ① ② ③
Legend
11/2" Type X gypsum board(1/2")
21/2" Type X gypsum board(1/2")
31/2" Type X gypsum board(1/2")
43-5/8" steel studs at 16" o.c.(3.625")
5R-13 fiberglass batt
61/2" Type X gypsum board(1/2")
71/2" Type X gypsum board(1/2")
81/2" Type X gypsum board(1/2")

Specifications

Fire Rating
3-Hour
STC Rating
STC 60
Load Bearing
Yes
Total Thickness
6.625"
Source / Publisher
UL (Underwriters Laboratories)
Design Number
U237
Assembly Type
Wall
Test Standard
UL 263
Construction Group
Light Frame
Number of Layers
8 layers

Applicable Codes

IBC 2021 Table 722.1IBC 2024 Table 722.1IBC 2024 §722

Construction Summary

3-5/8" steel studs at 16" o.c. with R-13 fiberglass batt, 3 layers of 1/2" Type X gypsum board each side

Material Layers

LayerMaterialThickness
11/2" Type X gypsum board1/2"
21/2" Type X gypsum board1/2"
31/2" Type X gypsum board1/2"
43-5/8" steel studs at 16" o.c.3.625"
5R-13 fiberglass batt—
61/2" Type X gypsum board1/2"
71/2" Type X gypsum board1/2"
81/2" Type X gypsum board1/2"

Important Notice

This assembly listing is for reference only. Always verify against the current UL Product iQ database before specifying in construction documents. Material substitutions may void the fire rating. Consult with a qualified fire protection engineer for project-specific requirements.