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Can I secure only one side and the bottom of the Dryerbox to framing as opposed to securing all sides to framing and blocking? If so, does it affect the fire rating?

April 26, 2017affect blocking dryerbox framing rating Secure SECURING

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Can I secure only one side and the bottom of the Dryerbox to framing as opposed to securing all sides to framing and blocking? If so, does it affect the fire rating?

1 Answer

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AnswerThe Dryerbox is constructed of 22 gauge aluminized steel making it very rigid so there is no need for additional blocking. Regarding fire ratings, only one side and the base were secured to framing when the Dryerbox was tested at UL to achieve its classification as a fire stop device. The other side was not blocked. Therefore, no blocking is required. The Dryerbox is strong enough to withstand fire conditions without special framing.