Recessed Ledge Detail - ORTAL 98HH Series Installation And Operation Manual

Recessed Ledge Detail

A ledge over the top of a fireplace that is less than 24 inches from the top of the fireplace viewing area must maintain a minimum
of 12 inches from the top of the viewing area to the top of the framing. Entire structure must be non-combustible
(framing and finish).
Ledge Size: A x B ≤ 580 sq. in.
A = ledge depth, B= ledge width (Top View)
Oversized Ledge
If ledge surface area exceeds 580 sq. in., the heat release must be divided between the ledge and the chase ceiling: 25% at
the ledge and 75% at the chase ceiling.
NOTE: Chase area minimum requirements must be met throughout the entire fireplace chase. See "Chase Area
Minimum" section above for details.
Oversized Ledge
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