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HydroFlame™ Firestop Large Diameter Sleeve Extensions

Achieve the precise sleeve height you need for large diameter firestop sleeves. Available to fit a wide variety of sleeve combinations, these 1 in. extensions are ideal for thicker floor slabs.

Features and benefits:
  • Comes in sizes for 8- to 12-in. HydroFlame large diameter sleeves
  • Compatible with both firestop and hollow sleeves
  • Two extensions create a 2 in. tall water dam 
  • 2 in. x 2 in. side tabs provide support for riser clamp isolation pads


cUL Listed
fbc compatible
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“FBC™ System Compatible indicates that this product has been tested, and is monitored on an ongoing basis, to assure its chemical compatibility with FlowGuard Gold®, BlazeMaster® and Corzan® piping systems and products made with TempRite® Technology.” “The FBC System Compatible Logo, FBC™, FlowGuard Gold®, BlazeMaster®, Corzan®, and TempRite® are trademarks of Lubrizol Advanced Materials, Inc. or its affiliates.”