cupolas
dayton 4hx59 roof curb18 in high
roof curb fixed ventilated curb height 18 in inside square 37 1 2 in outside square 40 1 2 in for commercial kitchen uses 18 gauge galvanized steel construction use with dayton ventilators having a 42 in square base br b features b ul li curb height in . 18 li li for use with nfpa 96 ul 705 and ul 762 applications li li inside square in . 37 li li item roof curb li li outside square in . 40 1 2 li li type fixed ventilated li li construction 18 gauge galvanized steel li li use w dayton ventilators having a 42 square base li li top flange surface width in . 1 3 4 li li flashing flange in . 4 li ul