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Masonry and Factory Built Fireplace Clearances
The minimum required clearances to combustible materials when installed into a masonry or factory built fireplace
are listed below.
Adjacent
Unit
Side Wall
(to Side)
A
Ontario
In-built (I2101M) 10"/530mm
Vancouver
In-built (I3101L)
13"/330mm
Side and Top facing is a maximum of 1.5"(38mm) thick.
Floor protection must non-combustible, insulative material with an R value of 1.1 or greater.
* If the hearth extension is flush with the floor (F) it must extend 19.5"(495mm) in front of the body face (E).
Note: Hearth Extension Width (G) is measured from edge of fuel door to side of hearth.
Masport In-built Fireplaces
Mantle
Top
(to Top)
Facing
(to Top)
B
C
17"/430mm 10.25"/260mm
19"/480mm
18"/455mm
Clearance diagram for installations
INSTALLATION
Side
Minimum
Facing
Hearth
(to Side)
Extension*
D
E
8"/203mm
16"/406mm
6.5"/165mm
16"/406mm
Minimum
Minimum
Hearth
Hearth Side
Elevation*
Extension
F
G
1.5"/38mm
8"/205mm
1.5"/38mm
8"/205mm
7
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