HOLDRITE’s lab-tested and UL Listed cast-in-place firestop solution continues with the introduction of the HydroFlame Pro Series. An interlocking, telescoping sleeve eliminates the need to measure and cut sleeves on most job sites. Locator whiskers help installers find buried sleeves after the concrete pour, turning a tiresome chore into a quick task. A threaded OHSA-rated safety cap allows for easy, non-destructive removal. The water-tight mid-body seal grips pipes, conduits, and cables ½-6 inches thick with a UL W-rated seal. Its patent-protected telescoping design and standardized packaging make the product easy to stock.