cupolas
dayton 2rb79 roof curbfixed12 in h28 1 2 in od
roof curb fixed nonventilated curb height 12 in curb square o d 28 1 2 in curb square i d 25 1 2 in 18 gauge galvanized steel construction use w dayton ventilators having a 30 in square base for use with flat roofs only includes damper tray br b features b ul li curb height in . 12 li li curb square i.d. in . 25 1 2 li li curb square o.d. in . 28 1 2 li li damper size in . 23 x 23 li li for use with flat roofs only li li includes damper tray li li item roof curb li li type fixed nonventilated li li construction 18 gauge galvanized steel li li use w dayton ventilators having a 30 square base li li mounting flange surface w in . 2 li li flashing flange in . 2 li ul