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Safety

Spark Arrestor

The mesh on a chimney cap that stops embers from escaping.

All glossary terms

What is Spark Arrestor?

The wire mesh component of a chimney cap. NFPA 211 specifies 3/8" to 5/8" mesh openings — small enough to catch sparks but large enough to allow draft. Required in wildfire zones and many municipalities.

Related terms:Chimney CapCap

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