Broan 345CSOBK Manual De Instrucciones página 3

2" MIN.
19"
6. Taking into consideration the thickness of your chosen
flashing material, build a 19" x 19" (outside dimensions)
curb out of 2" x 4" or 2" x 6" material.
7. Working from the outside of your roof, use the guide
hole as a center point, cut and remove roofing material
in a 20" x 20" minimum area.
19"
8. Use the guide hole as a center point, use a nail and
9. Drill a large starting hole for the sabre saw just inside of
10. Cut out the roof board(s) inside of the line.
MODELS 345CSOBK • 345CSOWW
string to scribe a 14" diameter circle on the black paper
or roof decking.
the line or the 14" circle.
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