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TYPE OF SHIELD
Sheet metal, a minimum of 24 gauge (0.61 mm) in
thickness , spaced out at least 25 mm (1 in)* by
non-combustible spacers
Ceramic tiles, or equivalent non-combustible
material, on non-combustible board spaced
out at least 25 mm (1 in)* by non-combustible
spacers
Ceramic tiles, or equivalent non-combustible
material, on non-combustible board, with a
minimum of 24 gauge (0.61 mm) sheet metal
backing spaced out at least 25 mm (1 in)* by
non-combustible spacers
Brick, spaced out at least 25 mm (1 in)* by
non-combustible spacers
Brick, with a minimum of 24 gauge (0.61 mm)
sheet metal backing, spaced out at least 25
mm (1 in)* by non-combustible spacers
* In Canada this space can be 21 mm (⅞").
Installation and Operation Manual - Harmony 2.3
CLEARANCES MAY BE REDUCED BY
THESE PERCENTAGES
SIDES AND REAR
TOP (CEILING)
CAN /USA
USA
CAN /USA
(%)
MIN.
(%)
67
12"
50
50
18"
33
67
12"
50
50
18"
N/A
67
12"
N/A
USA
MIN.
18"
24"
24"
N/A
N/A
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