A rain cap prevents snow, rain, animals, as well as downdrafts back into the pipe.
825B, 826B, 988, 994, 3306, 3306B, 3406B, 3406C, 3408, 3408B, 3408C, 3456, C13GENSET, C15, C18, C27, C9, G3508, G3512, G3516, C11, C13, C15, C18, 824B, 834, 10, 10C, 10S, 10U, 57H, 8, 8A, 8SU, 8U, D10, D10N, D10R, D10T, D8N, D8R, D8R, II
