The ZS family has been thought in order to save precious space in corridors (25,9 cm depth) as there is the possibility of installing vertical smoke pipes and for the Model 8C-10C-12C to spread air in other rooms. You can find a steel combustion chamber for Models 6-8C-10C and vermiculite for the Model 12C.

Reduced depth
Upper or rear smoke outlet
Cast iron brazier
Three aesthetics