Architectural Precast Concrete
and Steel Stud Building Panels

Acoustical Test Results
Test Results
SlenderWall without insulation and Gypsum board Type Result
Sound Transimission Class STC 40
Outdoor-Indoor Transmission Class OITC 36
SlenderWall with insulation and Gypsum board Type Result
Sound Transimission Class STC 53
Outdoor-Indoor Transmission Class OITC 42
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