Product Manual

Black Stag Installation and Operation Manual
36
7.4.2 Table of Clearance Reduction Percentages
Type of shield
Clearances may be reduced by these
percentages
Sides
and rear %
Top %
(ceiling)
Can/US
A
(%)
USA
min.
Can/US
A
(%)
USA
min.
Sheet metal, a minimum of 24
gauge (0.61 mm) in thickness ,
spaced out at least 25 mm
(1 in)* by non-combustible
spacers
67 12 in 50 18 in
Ceramic tiles, or equivalent
non-combustible material, on
non-combustible board spaced
out at least 25 mm (1 in)* by
non-combustible spacers
50 18 in 33 24 in
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
67 12 in 50 24 in
Brick, spaced out at least
25 mm (1 in)* by non-
combustible spacers
50 18 in N/A N/A
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
67 12 in N/A N/A
* In Canada this space can be 21 mm (7/8 in)