Suitable for use with model SDBD 6c in to 10 in down blast direct drive centrifugal roof exhauster, model SDB 6 to 10 in down blast belt drive centrifugal roof exhauster, model STXD 6 to 10 in Upblast direct drive centrifugal roof and sidewall exhauster
S&P Roof Mounting Curb, 16-1/2 in Outside Square Size, 12 in Height, Galvanized Steel