Broan 345SOWW Installation Guide download pdf (Page 3)

MODELS 345SOBK • 345SOWW

Page 3

7. Cut out the shingles inside of the circle.

8. Using the same nail and string shown in step 6, scribe

a 14” diameter circle on the black paper or roof decking.

Note: if replacing an existing ventilator the hole diameter

may be larger than 14”. This is acceptable provided the

ventilator base is adequately supported by the roof

decking.

9. Drill a large starting hole for the sabre saw just inside of

the line or the 14" circle created in Step 8.

10. Cut out the roof board(s) inside of the line.

11. For proper removal of roofing nails, draw a 27" square,

centered around the hole. Remove nails holding shingles

down from top two-thirds of square.

6. From the roof side, using the guide hole as the center

point, use a nail and string to scribe a 16-1/2” diameter

circle on the shingles. Note: If replacing an existing

ventilator, the hole diameter may be larger than 16-1/2”.

This is acceptable provided the roofing material overlaps

the ventilator by at least 2” on all sides.

1 2 3 4 5 6 7 8 ... 17 18

No comments

Broan 345SOWW Installation Guide Page 3