Manufacturer's Designation: Pipe Collar GW-21.
| Wall: Minimum nominal 2 x 4 wood or steel stud framed gypsum wallboard faced wall assembly, providing a 2 hour rating. |
| Penetrations: Max. 4" diameter SCH 40 ABS or PVC DWN or process and supply, cellular core or solid, max. 3" diameter CPVC. |
| Metacaulk® Pipe Collar: Sized appropriately for pipe fastened to both sides of gypsum wall assembly in accordance with Rectorseal Corp. installation instructions. |
| Metacaulk® 1000: Optional - Sealant installed to a depth of 1/2". |