1. Wall Assembly — Min (127 mm) 5 in. thick reinforced lightweight or normal weight (100-150 pcf) (1600-2400 kg/m³)concrete. Wall may also be constructed of any UL Classified Concrete Blocks. Max diam of opening is (92 mm) 3-5/8 in.

See Concrete Blocks (CAZT) category in the Fire Resistance Directory for names of manufacturers.

2. Through Penetrant — One nonmetallic pipe or tube to be centered within the firestop system with a nom (16 mm) 5/8 in. annular space. Pipe or tube to be rigidly supported on both sides of wall assembly. The following types and sizes of pipes may be used:

A. Polyvinyl Chloride (PVC) Pipe — Nom (50 mm) 2 in. diam (or smaller) Schedule 40 PVC pipe for use in closed (process or supply) or vented (drain, waste or vent) piping systems.

B. Chlorinated Polyvinyl Chloride (CPVC) Pipe — Nom (50 mm) 2 in. diam (or smaller) SDR 17 CPVC pipe for use in closed (process or supply) piping systems.

C. Crosslinked Polyethylene (PEX) Tubing — Nom (25 mm) 1 in. diam (or smaller) SDR 9 PEX tube for use in closed (process or supply) piping systems.

3. Firestop System — The firestop system shall consist of the following:

A. Packing Material — Foam backer rod firmly packed into opening as a permanent form. Packing material to be recessed from both surfaces of wall as required to accommodate the required thickness of fill material.

B. Fill, Void or Cavity Material* — Caulk — Min (19 mm) 3/4 in. thickness of fill material applied within the annulus, flush with both surfaces of wall.

RECTORSEAL — Metacaulk 1000 or Metacaulk 350i