Instead of having to spray paint sleeves to differentiate your penetrations from plumbing, HydroFlame Pro cast-in-place Electrical Firestop Sleeves feature green whiskers and bases to help you quickly identify your work. The sleeves come in telescoping and adjustable-cap designs that allow for tool-less height adjustment based on slab thickness. Telescoping sleeves come in 7-½ in. and can extend to 11-¾ in, with extensions available for thicker slabs, and the adjustable-cap sleeves can be adjusted from the default 8 in. to 7-¼-in.
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