The Napoleon Large Black 4-Sided Backerplate (model BK4B3142) is designed for Oakville™ 3 and X3 Series gas fireplace inserts. Made from durable steel with a black powder-coated finish, it provides lasting performance and a clean appearance. The four-sided frame fully conceals the fireplace opening, creating a smooth transition between the insert and the surrounding wall for a professional, finished installation.
Key Features
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Compatible with Oakville™ 3 and X3 Series gas fireplace inserts
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Constructed from steel with a black powder-coated finish
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Four-sided design covers the entire fireplace opening
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Creates a seamless, finished look between insert and wall

