UL Classified- meets code requirements, universally recognized.
A one piece metal collar assembly encasing 3Ms heat expanding 3M Interam Ultra GS (intumescent) material. The 3M Ultra RC Pack is used for new and retrofit installations and will accommodate 2 (50mm), 3 (76mm) and 4 (102mm) schedule 40 drain, waste and vent pipe systems with up to 2 hour fire ratings.Patented Ultra Fast anchoring system. Proven technology- intumescent action quickly seals off plastic pipe in a fire. UL Classified- meets code requirements, universally recognized. Embossed 3M logo- easily identified as a fire rated device during inspections. Factory made- assures consistent quality.