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G. Shrouds
HHT Shrouds
•
You may install a shroud with this fireplace. See
Section 12.B for a list of UL Listed shrouds. Follow the
instructions included with these optional components
Field Constructed Shrouds
WARNING! Risk of Fire! Shrouds must be constructed
as specified. Improper construction may overheat chase
top.
•
Chase top shrouds may be field constructed where
permitted by regional building codes.
NOTICE: Some regional codes require an agency-
Listed shroud. Consult your local building officials.
•
The following field constructed shroud designs have
been tested for Hearth Technologies fireplace systems
and termination caps.
•
The shrouds must be constructed from a minimum .018
in. (26 ga) thick aluminized steel.
•
The wire mesh is optional but recommended and must
be .018 in. thick minimum, 1/2 in. mesh.
Open Top Shroud (may be used with DVP-TV, DVP-
TVHW, SLP-TVHW)
Min.
Top Dim.
Min.
Top Dim.
Min.
Base Dim.
Min. Base Dims.
in
19 x 19
mm
483 x 483
Min. Top Dims.
in
16 x 16
mm
406 x 406
Figure 7.16 Open Top Shroud Dimensions
Heatilator • NNXT33-IFT, NNXT33L-IFT, NNXT36-IFT, NNXT36L-IFT Installation Manual • 2628-980 Rev. C • 8/20
Min.
Base Dim.
Mailbox Style Shroud (may be used with DVP-TV,
DVP-TVHW, SLP-TVHW)
Min. Height
Min.
Base Dim
Min. Base Dims.
in
20 x 20
508 x 508
mm
Min. Height
in
mm
Figure 7.17 Mailbox Style Shroud Dimensions
Roofed Style Shroud (may be used with DVP-TV,
DVP-TVHW, SLP-TVHW)
Minimum
Height
Min. Base Dims.
in
mm
Min. Height
in
mm
Min. Opening Width
in
mm
Min. Opening Height
in
mm
Figure 7.18 Roofed Style Shroud Dimensions
Min. Base Dim
18
457
Minimum
Opening
Height
Min. Opening
Width
Minimum
Base Dimension
20 x 20
508 x 508
18
458
14
356
10
254
43
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