Masport PG33 Gas Inbuilt
8
16-1/2”
(419mm)
Minimum
4"
(102mm)
3"
(76mm)
1-1/2"
(38mm)
30”
(762mm)
10" (254mm)
dia. Hole through
wall for Dura-Vent
1/2"
(13mm)
Drywall
Top Header
Opening for gas
connection
INSTALLATION
Install Side Nailing Strips, and Top Facing
Support before unit is slipped into
position. See page 9 for assembly
details.
3) For exterior walls, insulate the enclosure to
the same degree as the rest of the house,
apply vapour barrier and drywall, as per
local installation codes. (Do not insulate
the fireplace itself.)
4) The top of the unit must not be closer than
30" (762mm) to the ceiling.
5) Combustible material may be brought up to
the top and sides of the unit and be covered
with ceramic tiles, bricks, rock or other
suitable combustible finishing materials.
Note: The unit does not have to be com-
pletely enclosed in a chase. The
clearance on top of the unit is 0" to
the standoffs so combustible
building materials can be laid di-
rectly on top of the standoffs. You
must maintain clearance from the
flue to combustible materials for
flex for Simpson Dura-Flue, see
page 7.
1) Determine the total thickness of facing
material (e.g. drywall plus ceramic tiles) to
allow the finished surface to be flush with
the front of the unit. Total facing thickness
can vary from 1/2" (13mm) to 1-1/4" (32mm)
thick.
6) Use steel studs for framing where the
1-1/2" (38mm) clearance from the flue to
combustible material cannot be maintained.
2) Frame in the enclosure for the unit with
framing material.
Vertical Termination or
Vertical Rise with Horizontal
Termination
Rear Termination
FRAMING AND FINISHING
NOTE: If this is an outside corner, the minimum
distance between the flue and the outside
corner is 6" (15cm) with AstroCap termination
cap or 12" (30cm) with Dura-Flue termination
cap.
NOTE: If this is an outside corner, the minimum
distance between the flue and the outside
corner is 6" (15cm) with AstroCap termination
cap or 12" (30cm) with Dura-Flue termination
cap.
The HeatWave Duct Kit has different
clearance and framing requirements,
check the HeatWave manual for details.
Simpson Dura-Flue Piping
Flex Piping
12-3/4”
(324mm)
Minimum
4"
(102mm)
3"
(76mm)
1-1/2"
(38mm)
26”
(660mm)
10" (254mm)
dia. Hole through
wall for Flex
1/2"
(13mm)
Drywall
Top Header
Opening for gas
connection
Simpson Dura-Flue
Minimum Clearances
Flex Pipe
Minimum Clearances
For Both Simpson & Flex
For Both Simpson & Flex
