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10
8"
MIN.
16"
8"
MIN.
16"
MIN.
8"
MIN.
16"
MIN.
HEARTH
FIREPLACE
BRICK OR STONE
HEARTH EXTENSION
(52" LONG MIN.)
6"
MIN.
FIREPLACE
HEARTH
MIN.
DO NOT PLACE HEARTH
MATERIALS ABOVE OPENING
OF FIREPLACE.
METAL SAFETY STRIP
METAL SAFETY STRIP
MIN.
MIN.
FIREPLACE
HEARTH
METAL SAFETY STRIP
6"
6"
(52" LONG MIN.)
HEARTH EXTENSION
BRICK OR STONE
(52" LONG MIN.)
HEARTH EXTENSION
BRICK OR STONE
ALTERNATE BRICK OR STONE
HEARTH EXTENSION SHOWN WITHOUT
THE OPTIONAL MLK36 LOUVER KIT
INSTALLED ON THE FIREPLACE.
ALTERNATE BRICK OR STONE
HEARTH EXTENSION SHOWN WITH
THE OPTIONAL MLK36 LOUVER KIT
INSTALLED ON THE FIREPLACE.
DO NOT PLACE HEARTH MATERIAL
ABOVE OPENING OF FIREPLACE.
PLATFORM (PLATFORM MAY
EXTEND UNDER HEARTH
EXTENSION IF DESIRED.)
DO NOT BLOCK ANY LOUVERED OPENINGS
PLATFORM (PLATFORM MAY
EXTEND UNDER HEARTH
EXTENSION IF DESIRED.)
FLOOR PROTECTION
If this fireplace is installed on a combustible floor, the floor area 16 inches in front of, and 8 inches either side
of the fireplace opening must be protected by an insulating noncombustible hearth extension. This hearth
extension may be either minimum 6-inch thick stone or brick as shown by Figure 10, a H1652 Hearth Extension
Kit or a locally constructed hearth equivalent to the H1652.
The insulation used in the H1652 hearth extension has a thermal conductivity (K Factor) of .43. If you do
construct a hearth extension equivalent to the H1652, be sure the insulation you use has enough compressive
strength to support the weight of the covering materials and persons standing on it, and insulating qualities
equal to or better than the ˚" covering provided by the H1652.
FIGURE 10
53D9033. Rev 1 03/03