Ladrillo intumescente CFS-BL - Almohadillas, tapones y bloques intumescentes - Hilti Española
HOW TO install Hilti CFS-BL firestop blocks for cable tray penetrations - UL - YouTube
Hilti CFS-BL FireStop Block 8"x 5 1/4" Temp Rating 5-140 Fahrenheit Use in Comme | eBay
Hilti - CFS-BL firestop block is suitable for sealing single or multiple penetrations in small to large openings. It is the solution for both permanent or temporary applications and highly flexible for