The Holdrite® HYDROFLAME™ PRO Series Sleeving System consists of UL & cUL listed assemblies that provide sleeving & firestop solutions for cast-in-place concrete floors. These sleeve products provide solutions for both metallic & non-metallic pipes, line-sets, cables, conduits, floor drains, tub drains, shower drains and toilet drains. For slabs 2-1/2 in and thicker and for pipes, conduits & cables 1/2 in - 6 in nominal; 2 & 3 hr UL Fire Ratings and T, L & W- ratings available. 50 Pa ratings available. See UL Fire Resistive Directory (R25101) for further details. Sleeves are easily adapted for use on Corrugated Metal Decking with the use of HoldRite's CD Plates.