This part fits
Baxi COMBI HE 105
Baxi COMBI e 105
Baxi COMBI MAXFLUE 80
Baxi COMBI e 80
Baxi COMBI INSTANT HE 105
Baxi COMBI INSTANT 105
Baxi COMBI INSTANT HE 80
Baxi COMBI INSTANT e 80
Baxi SYSTEM 60/100
Potterton PERFORMA 24
Potterton PERFORMA 28
Potterton PERFORMA 28I
Potterton PERFORMA SYSTEM 12
Potterton PERFORMA SYSTEM 18
Potterton PERFORMA SYSTEM 24
Potterton PERFORMA SYSTEM 28