Compatible with Spartan models:

STR-23
STF-23
STR-47
STF-47
STR-72
STF-72
SPR-50
SPR-72
SPR-93
SUR-27
SUF-27
SUR-48
SUF-48
SST-27
SST-27-12
SST-48
SST-48-18
SST-60
SST-60-24
SST-72
SST-72-30

Dimensions: 4"W x 3"L x5-1/2"H