Solex 30PAAI; 30PAAI-2; 32/35APAI-2; 40PHH; 40PII; pump diaphragm   P/N SD1220

See Images for dimensions 

Centre steel discs 22mm Dia.

Screw hole centres vertical and horizontal 35mm [1.385”]

Screw holes centres across centre of diaphragm 50.8mm [2”]

Height of button/stem 10mm [0.4”]

All dimensions are the same as S1314 except the diameter of the steel protector plates 

Note re ALTERNATE Diaphragm with larger, 30mm. diameter protector plates, see SD1314