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Inner Surface Reference

11.2.1.13 - The inner surfaces of the smoke chamber shall be parge coated smooth, with an insulating refractory mortar, and not inclined more than 45 degrees from vertical.

Depth Reference

11.2.1.12 - The smoke chamber depth shall not be greater than the depth of the fireplace chamber.

Height Reference

11.2.1.11 - The smoke chamber height shall not be greater than the inside width of the fireplace room opening.

Thickness Reference

11.2.1.10 - Where unlined, the smoke chamber wall thickness shall not be less than 8"

Cross Section Reference

11.2.1.3.3 - The cross sectional area of the passageway above the firebox including the throat, damper, and smoke chamber shall not be less than the cross sectional area of the flue

Smoke chamber assembly

NFPA Fire Code 211 quick links