cupolas
dayton 20uv27 roof curb adapter40 1 2 in .29 1 2 in . g6166596
roof curb adapter increaser curb side square o.d. in . 40 1 2 fan side square o.d. in . 29 1 2 curb height in . 8 1 2 top flange height in . 6 bottom flange height in . 2 1 2 construction material galvanized steel adapts 30 in . fan base to fit 40.5 in . roof curb br b features b ul li curb height in . 8 1 2 li li item roof curb adapter li li type increaser li li function adapts 30 fan base to fit 40.5 roof curb li li construction material galvanized steel li li curb side square o.d. in . 40 1 2 li li fan side square o.d. in . 29 1 2 li li top flange height in . 6 li li bottom flange height in . 2 1 2 li ul