SnowShield is intended for protection of inlet ducts so that snow or water does not enter the building. Thanks to the profile and chamber construction, snow and water are effectively separated from the air stream. SnowShield’s main material component is aluminium, which means that the construction does not freeze. Air is also allowed in through the sides and bottom of the snow shield. The roof section slopes outwards. The lower part is made of perforated aluminium. The size of the SnowShield must be at least 600 mm higher and wider than the inlet duct in the wall. SnowShield’s water separation rate is greater than 99% with a surface velocity 0.6 m/sec (VTT’s measurement report 5.5.2003).