Collection of rectangular litter bins composed of a thick steel sheet supporting structure and two specular panels, one fixed and one which opens with snap lock. The litter bin is equipped with cover and bag holder ring. Two versions are available, with or without ashtray with integrated container. The version with ashtray has the openable door equipped with an in-built ashtray with a stainless steel plate for the extinguishing of cigarettes. The litter bins can be placed side by side to create islands for separate collection.