Metacaulk Intumescent Collars Size:4in Collar Fits belts up to 3″

Fits belts up to 3″ wide

000 rpm motor with a tool-free bit change

Specialty nylon washers--won't wear out with lots of use

Approximately 100pcs per box

3 Rockwool Comfortbatt Steel Stud R22

Metacaulk Intumescent Collars Size:4in Collar Fits belts up to 3″Metacaulk Pipe Collars are prefabricated for open closed through penetration firestop systems with 11 2 6" (38 152 mm) plastic pipe. Easy lock mechanism assures easy install. Collar design greatly cuts time expense compared to competitors' collars. Used to seal off plastic pipe both in closed & vented (DWV) conditions. Collar may be used on up to 3 hour rated concrete floors and walls, up to 2 hour rated gypsum walls and up to 2 hour rated wood