Available Accessories for electric boxes Push button head diameter 22 flush without red plate with metallic trim SCHNEIDER SCHNEIDER ZB4BA4 €7.32 Non-illuminated pushbutton head mounting diameter 22mm, Harmony XB4 product range, standard head type. Circular signaling head shape. Operator type spring return. Flush red operator profile, without marking and metallic trim. It has dimensions of 29mm wide, 29mm high and 28mm deep. The Harmony XB4 range is designed for industry, this range combines ease... Add to basket