User guide
10
of 1-1/4 inches. Use the two sheet metal 
screws provided to secure the Pipe 
Section to the back of the Termination 
Cap. The Wall Thimble Cover will cover 
the screw heads (Fig. 8).
Step 7.  Slide the Wall Thimble Cover 
up to the wall surface and attach to 
the wall with screws provided (Fig. 9)
Apply optional decorative brass trim to 
Wall Thimble Cover, if desired.
For installations requiring a vertical 
rise on the exterior of the building, 
14-inch and 36-inch tall Snorkel 
Terminations are available (Fig. 10). 
Follow the same general installation 
procedures as used for a standard 
Horizontal Termination. The standard 
Wall Thimble or Wall Firestop can 
be used with the Snorkel, but the 
exterior plate will overhang the edges 
of the Snorkel. However, a universal 
Wall Thimble is available for use 
with the Snorkel that is not visible 
on the exterior of the building (46 or 
58DVA-WTU). To install the Universal 
Wall Thimble, insert the thimble from 
the interior of the house and adjust 
the length of the tube to ensure it 
touches the backside of the Snorkel 
when installed (Fig. 10). Secure the 
tube in place using 2 sheet metal 
screws. Mount the Wall Thimble 
in place. Attach the Snorkel to the 
wall using wood screws or other 
appropriate fasteners, depending 
on wall construction. If the Snorkel 
Termination must be installed below 
grade level, (e.g. in a basement 
application), proper drainage must 
be provided to prevent water from 
entering the Snorkel Termination 
(Fig. 11). Do not attempt to enclose 
the Snorkel within the wall or any 
other type of enclosure.
SNORKEL
12" MINIMUM
ADJUST AND SECURE
OPTIONAL DVA-WTU
TELESCOPING THIMBLE 
SLEEVES WITH SCREWS 
SNORKEL
12" MINIMUM
ADEQUATE
DRAINAGE
WALL
COVER
THIMBLE
The Vinyl Siding Standoff prevents 
excessive heat from potentially warping 
or melting the vinyl siding material. 
Vinyl Siding Standoffs are not used with 
Snorkels. The Vinyl Siding Standoff is 
available in either a 1-piece version or a 
4-piece version.










