Diamond AD1B/H-R2 Upright Ventilated Freezer 700 LitresEnvironmental odours will usually affect wines that are stored for longer however the WKB1812 is able to prevent this by maintaining perfect air quality through an easily replaceable FreshAir activated charcoal filter. WKB1812 Ventilation button can control the humidity as required.. Liebherr's PowerCooling system rapidly cools down freshly stored items while creating a consistent cooling temperature throughout the interior. "