cupolas
dayton 2zv83 roof curbadustable width
roof curb adjustable width non ventilated curb height 12 in curb square o d 23 1 2 to 32 in curb square i d 19 1 2 to 28 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 . 19 1 2 to 28 li li curb square o.d. in . 23 1 2 to 32 li li damper size in . 19 to 27 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 25 to 30 1 2 li li mounting flange surface w in . 4 li li flashing flange in . 4 li ul