Model SP f/b three alpha characters f/b 5 through 20 f/b two numeric characters, for use with forced air systems not less than 50 CFM per kW, see below for individual model designation and air handler compatibility
SPUEAB for use with Rudd air handler model UEAB f/b 018 through 060
SPW8R for use with Carrier air handler model 40RR f/b 008, 012, 014, 016, 024, 028, 034, 044 or 054
SPWAH for use with Carrier packaged air conditioner model 50AH f/b 024 through 060
SPWBA for use with Carrier air handler model 40BA f/b 007 or 009
SPWCD for use with Carrier packaged heat pump model 50 f/b CD, CH, CV, CZ, QD or QH f/b 004 through 008
SPWDF for use with Carrier packaged heat pump model 50 f/b DF, DD or EQ
SPWDP for use with Carrier packaged heat pump model 50DP f/b 012 through 020
SPWFS for use with Carrier air handler model 40FS f/b 160, 200 or 220
SPWGC for use with Rudd air handler model UHGC f/b 075, 100, 150 or 200
SPWHQ for use with Carrier packaged heat pump model 50HQ f/b 014 through 080
SPWQQ for use with Carrier packaged heat pump model 50QQ f/b 024 through 060; Carrier packaged air conditioner model 50EE f/b 024 through 060
SPWRC for use with Carrier air handler model 40RC f/b 018 through 030; Bryant air handler model 516A f/b 018 through 030
SPWRE for use with Carrier air handler model 40RE f/b 008 or 010
SPWRF for use with Rudd packaged heat pump model URCF
SPWTB for use with Trane packaged heat pump model BTC or BTW f/b 048 through 060
SPWTH for use with Trane packaged heat pump model WCH, TCH or 4WHC f/b 024 through 042
SPWUD for use with Rheem/Rudd packaged heat pump model RSDA or USDA f/b 090 through 120
SPWVQ for use with Carrier packaged heat pump model 50VQ f/b 014 through 080
SPWWA for use with Whirlpool/Heil packaged air conditioner model NPAD f/b 5, 10 or 15
SPWWP for use with Whirlpool/Heil packaged heat pump model NPHC f/b 5, 10 or 15