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TYPE OF SHIELD
Sheet metal, a minimum of 24 gauge (0.61 mm)
in thickness , spaced out at least 1" (25 mm)* by
non-combustible spacers
Ceramic tiles, or equivalent non-combustible
material, on non-combustible board spaced
out at least 1" (25 mm)* 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 1" (25 mm)* by
non-combustible spacers
Brick, spaced out at least 1" (25 mm)* by non-
combustible spacers
Brick, with a minimum of 24 gauge (0.61 mm)
sheet metal backing, spaced out at least 1"
(25 mm)* by non-combustible spacers
* In Canada this space can be ⅞" (21 mm).
Page 40
CLEARANCES MAY BE
REDUCED BY THESE
PERCENTAGES
SIDES,
CORNER
(CEILING)
AND REAR
CAN /
USA
CAN /
USA
MIN.
USA
(%)
(%)
12"
67
(305 mm)
18"
50
(457 mm)
12"
67
(305 mm)
18"
50
(457 mm)
12"
67
(305 mm)
TOP
USA
MIN.
18"
50
(457 mm)
24"
33
(610 mm)
24"
50
(610 mm)
N/A
N/A
N/A
N/A
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