Click here for testing documentation: Firebarrier Pillows – Part# AD-PLLW System No. C-AJ-0067 Diagram, 3 Hr. Concrete w/ Open Void Firebarrier Pillows – Part# AD-PLLW System No. C-AJ-4046 Diagram, 3 Hr. Concrete w/ Cable Tray Firebarrier Pillows – Part# AD-PLLW System No. C-AJ-4052 Diagram, 3 Hr. Concrete w/ Cable Tray