Instructions / Assembly

®
Turbine Ventilator with Adjustable Base
To determine roof pitch, stand pitch gauge on peak
of roof. Place straight edge on opposite side of
roof. Read roof pitch from printed gauge parallel
to bottom of straight edge.
Cut hole as marked and seal around top and sides
with roofing cement.
Place locking clamp across seam and tighten with
color-coded machine screw.
Turn bottom of collar clockwise to match roof pitch
number with indicator line on flashing. Place 3
(#10 x 1") sheet metal screws through holes that
align with predrilled base holes.
Slide top half of flashing under shingles all the way to
the collar. Apply ½" bead of caulk between the roof
deck and the bottom face of the vent flange. Secure
with 12 (1-1/4" x 3/8") galvanized ring shank nails.
Choose location of turbine from the front page.
Center between two rafters and mark hole to be cut.
Turn top of collar counter colckwise to a level position.
Position turbine onto the collar, locating the vertical
legs into the collar slots. Install 3 (#10 x 1") sheet
metal screws through the vertical legs and into the
extruded holes in the collar. Tighten the screws firmly,
but do not over-tighten to the point that the screw
strips out.
Using caulk, fasten down any loose shingles. Using
caulk, seal all seams and nails.
After completing installation, check to make sure the
turbine turns freely. The turbine may have shifted in
transportation. If necessary, gently pry lowest point
of turbine upward to remove any wobble.
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PART #18940
© 2013 Air Vent Inc.
Rev. 12/2013
4117 Pinnacle Point Drive, Suite 400 Dallas, TX 75211
www.airvent.com • [e-mail]
1-800-AIR-VENT (247-8368)