Fits on Models: DG-2, DUAL, DUAL GPR, DUAL SH 1.75, DUAL SH-1.50, DUAL SH-1.75 GALLON, DUAL TF, DUAL-SH, G9-2 HD, G9-2 HD-S, G9-2A HD, G9-2T HD, G9-2TA HD, SINGLE, SINGLE SH, SINGLE SH 1.5, SINGLE SH 1.75, SINGLE TF, SINGLE TF 1.5, SINGLE TF 1.75, SYSTEM III, WDG-2