cupolas
dayton 2zv85 roof curbadustable width
roof curb adjustable width non ventilated curb height 12 in curb square o d 41 to 49 1 2 in curb square i d 37 to 45 1 2 in 18 gauge galvanized steel construction for use with ul 705 installations br b features b ul li curb height in . 12 li li curb square i.d. in . 37 to 45 1 2 li li curb square o.d. in . 41 to 49 1 2 li li damper size in . 39 to 50 sq. li li for use with ul 705 installations li li includes li li item roof curb li li type adjustable non ventilated li li construction 18 gauge galvanized steel li li use w dayton ventilators having a square base from 42 1 2 to 48 li li mounting flange surface w in . 4 li li flashing flange in . 4 li ul