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3.5" Nominal
Fire-Stopping Cables Entering the Wall Box Knockouts Without the Use of EMT or Conduit
Cut
Lines
Use One Section Per Cable
Fire-stopping EMT or Conduit on the Wall Box
Cut Lines
1" Strips
Cut the provided 7" x 7" x .125" putty pad diagonally as shown in Fig.1a. Wrap
one triangle section around the clamping connector as shown in Fig1b-e ensuring
a seal to the wall box. Compress the putty around the cable and connector to
remove any voids in the overlapping wraps.
Fig.1a Fig.1b Fig.1dFig.1c Fig.1e
Clamp
Connector
Fig.2a Fig.2b Fig.2dFig.2c Fig.2e
Fig.3
Fig.4a Fig.4cFig.4b
Cut the provided 7" x 7" x .125" putty pad into 1" strips as shown in Fig.3. Bundle the wires and cables exiting the EMT together.
Wrap one strip around the wire bundle as shown in Fig2a-c, add additional strips as needed to create a putty plug with an OD
slightly larger then the ID of the EMT connector. Press the plug into the EMT connector 5/8" and create a mushroom cap over the
end with the excess putty as shown in Fig. 2d,e. Compress the putty around the cable and connector to remove any voids in the
overlapping wraps.
Wrap one additional strip around the outside of the EMT or conduit connector
as shown in Fig4a-c, Press the putty into any voids between the connector and
the wall box ensuring a seal between the connector and the box. Compress the
putty around the connector to remove any voids in the overlapping wraps.
1.
2.
PWB-FR-450 SUPPLEMENTARY FIRE-STOPPING INSTALLATION INSTRUCTIONS
244 Bergen Boulevard. Woodland Park, NJ 07424, Phone: 973.785.4347 – Fax: 973.785.4207
43304 LIT1612
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