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UL U493

Chase Walls - Steel Stud (Non-Load-Bearing)

Fire Rating 2 hours
System STC 64
System Thickness 8 1/2 in.

Assembly Construction

Assembly Construction

Layer 1 - Gypsum Board:

5/8" Thick Gypsum Board (UL Type SCX)

Layer 2 - Steel Studs:

2-1/2" Steel Studs, EQ20 (0.020"), Staggered, Spaced 16" O.C.

Layer 3 - Insulation:

2-1/2" Glass Fiber Batt Insulation

Layer 4 - Air Space:

1" Air Space

Layer 5 - Steel Studs:

2-1/2" Steel Studs, EQ20 (0.020"), Staggered, Spaced 16" O.C.

Layer 6 - Insulation:

2-1/2" Glass Fiber Batt Insulation

Layer 7 - Gypsum Board:

5/8" Thick Gypsum Board (UL Type SCX)

Notes