Ventilation =$vent_groups[$m_class]?> · Ducted fans · Wall fans · Chimney fans =$vent_groups[$m_class]?> · Air inlets · Inlets with grid · Shutters (PVC) · Ventilation tube (for buildings of a pig sty, a chicken house, a stable, a piggery) =$vent_groups[$m_class]?> · Thermostats Space Heaters =$vent_groups[$m_class]?> · KID (Mobile gas heaters) Water supply =$vent_groups[$m_class]?> · Drinker SUEVIA 640 Thermo-Source · Bite ball valves AquaGlobe · Nipple drinkers 10092 (for calves and bulls)