Can be used when the insulated chimney passes through an attic ceiling from below. Suitable for applications with flat, vaulted or cathedral ceilings. Integrates firestopping and attic radiation cut-off in a single room. Factory-installed insulation and collar are included. Effective height (length) with standard extension is adjustable from 24″ (61 cm) to a maximum of 46″ (116.8 cm).
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