For BioLet/MullToa and Separera (alternative B) you need to supplement with a ventilation package that contains:
4 pcs ventilation pipe - length 1,1m, diam 55mm
1 pcs outer tube with reducing sleeve - length 1,0m, diam 110mm
2 pcs insulation
1 pcs roof penetration seal
1 pcs mesh hood
Extra accessories: 30 and 45 degree pipe bends, insulation, straight pipes and starter humus.
