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The HOLDRITE HF-M10 HydroFlame Large Diameter Sleeve is a cast-in-place firestop sleeve. It is UL Listed and designed for use with plastic, metallic, and insulated metallic penetrants from 8” to 12” in diameter. It is tested in concrete slabs up to 3 Hour F Rating for slabs 6” and thicker.
The HydroFlame sleeves are built 8” tall, but can be cut as short as 6”. Extensions are available in 1” high increments to match slab thicknesses.
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