Recommended Floor Protection

Distance between Floor and Base of Stove Recommended Protection
Stove has less than 2 inches of open space beneath the fire chamber or base. May not be placed on floors of combustible construction.
Stove has 2 to 6 inches of open space beneath the tire chamber or base. Protect combustible floors with 4 inches of hollow masonry block, laid with ends unsealed and joints matched to allow air circulation. The masonry must extend 18 inches on all sides of the unit and be covered with 24-gauge sheet metal.
Stove has legs that provide over 6 inches of open space beneath the fire chamber or base. Protect combustible floors with 2 inches thick closely spaced brick, concrete or stone. The masonry must extend 18 inches on all sides of the appliance and be covered by 24-gauge sheet metal.
Adapted from the American National Standard ANSI/NFPA 2 1 1, Feb. 1984