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Regency
®
 U39 ULTIMATE Direct Vent Freestanding Gas Stove
17
Alternate Horizontal 
Termination Caps
Dura-Vent Basic 
Horizontal Kit # 970
1 90
o
 Elbow
1 Wall Thimble Cover
1 Horiz. Sq. Term. Cap
DURA-VENT 
TERMINATION KIT
Planning Your Dura-Vent 
Installation
There are two basic types of Dura-Vent Direct 
Vent System installations: horizontal termination 
and vertical termination. Confi rm the maximum 
horizontal run and maximum vertical rise 
from the diagrams in the "Rigid Pipe Venting 
Arrangements" section. 
When planning your installation, it will be 
necessary to select the proper length of vent 
pipe for your particular requirements. For 
horizontal installations, determine the minimum 
clearance from the rear of the unit to the wall. 
It is also important to note the wall thickness.  
(The wall thimble is suitable for 2 x 4 or 2 x 6 
wall construction.) Select the amount of vertical 
rise desired for "vertical-to-horizontal" type 
installations.  
Warning:  Always maintain required 
c l e a r a n c e s   ( a i r   s p a c e s )   t o   n e a r b y 
combustibles to prevent a fi re hazard. Do 
not fi ll air spaces with insulation. 
The minimum clearance requirements between 
the outer wall of the vent pipe and nearby 
combustible surfaces is 1-1/4 inch. Be sure 
to check the vent termination clearance 
requirements from decks, windows, soffi ts, 
gas regulators, air supply inlets and public 
walkways as specifi ed in the "Exterior Vent 
Terminal Locations" section and in your local 
building codes.
To determine the length of vent pipe required 
for vertical installations, measure the distance 
from the unit fl ue outlet to the ceiling, the ceiling 
thickness, the vertical rise in an attic or second 
storey, and allow for suffi cient  vertical  height 
above the roof line. 
For multi-storey applications, fi re stops are 
required at each fl oor level. If an offset is 
needed, additional pipe, elbows and supports 
will be required.
DURA-VENT VENTING 
COMPONENTS
You will require the following components with 
your new Regency
®
 Direct Vent Freestanding 
Gas Stove. Please review your product to make 
sure you have everything you need. In the 
event that you are missing any part, contact 
your dealer. 
Note:  These are the minimum pieces 
required. Other parts may be required 
for your particular installation. See  
the "Dura-vent Horizontal Kit" 
section for a list of vent parts.
If installing termination on a siding covered wall, 
a vinyl siding standoff or furring strips can be 
used in order to ensure that the termination is 
not recessed into siding.
The vinyl siding standoff is required for walls 
with vinyl siding.
INSTALLATION
Minimum components for a Dura-Vent 
Horizontal Installation:
 
A) Dura-Vent 
Horizontal 
Termination 
Kit
B)  Wall Thimble (required  for combus-
 tible 
walls)
Minimum components for a Dura-Vent 
Vertical Termination:
C) Dura-Vent 
Vertical 
Termination 
Kit
 
See the "Rigid Pipe Venting  
 
 
Arrangments" section for pipe lengths.
The Simpson Dura-Vent Direct Vent System 
offers a complete line of component parts 
for installation of both horizontal and vertical 
installation. Many items are offered in decorative 
black, as well as galvanized finish. The 
galvanized pipe and fittings are used for 
concealed locations such as attics or where 
corrosion is a factor, such as above the roof line. 
Decorative brass trim kits are available for both 
wall thimbles and ceiling support boxes.