The DuraTech Firestop Joist Shield is used when the DuraTech Class A pipe is passing through a floor or ceiling where a ceiling support box is not used. The plate gets mounted to the underside of the ceiling and the sleeve is adjustable to cover the framing.
Note: The Firestop is not needed when passing through the roof decking.
Measurement Chart:
DuraTech Firestop Joist Shield 5″ to 8″
| Size | 5″ | 6″ | 7″ | 8″ |
| A | 7.125″ | 8.125″ | 9.125″ | 10.125″ |
| B | 10.875″ | 11.875″ | 12.875″ | 13.875″ |
| C | 13″ | 14″ | 15″ | 16″ |
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