This is a Waterway Executive 115V 1 .5HP 48fr 2 1/2" x 2".. This pump is a very unusual one as it has a 2 1/2" Suction Side which measures about 3 5/8" edge to edge on the threads on the front suction side and 2" on the pressure side top which measures about 3" edge to edge..

Note: I have seen this pump in Phoenix brand Spa Titanium series with a 56fr sticker on them but it is definitely a 48 frame..

Complete Pump Type    Portable Spa Pump
Speed    2 Speed (2-Spd)
Motor Voltage    115v
Drain Plug Location    3,6,9 o`clock
Pump to Motor Foot Types    4a
Suction Style    Center
Suction Connection (Physical Dimension)    3-11/16"od
Suction Connection Type    Male Buttress Thread (mbt)
Suction Pipe Size    2-1/2"
Discharge Style    Side
Discharge Connection (Physical Dimension)    3-1/16"od
Discharge Connection Type    Male Buttress Thread (mbt)
Discharge Pipe Size    2"
Horsepower    1.5SPL
Motor Frame    48 Frame Thru-Bolt
Motor Amperage/Wattage    13.3A/4.1A
Manufacturer    Waterway
Pump Model    Executive
Manufacturer Impeller Number    310-4210 (2.0hp)
Volute Fastening Type    8 Screws
Volute/Sealplate Number    315-1240