Notice:1. The front of the air curtain is the air inlet, please leave more than 30CM space, and please leave 20CM above.Please leave more than 0.5CM space on both sides. .2. For glass, etc. that cannot be used for expansion screws, please go to the nearby stainless steel supply store to buy horizontalbar bracket.3. The wind curtain is very strong, and it is not allowed to blow air against the human body for a long time.Product Specifications:0.6m=24inch, body size: 60*15*19cm, weight: 6kg, power: 80w, wind speed: 9-11m, wind volume: 1200(m3/h), noise: 50db0.9m=36inch, body size: 90*15*19cm, weight: 7.5kg, power: 100w, wind speed: 9-11m, air volume: 1300(m3/h), noise: 55db1m=40inch, body size: 100*15*19cm, weight: 8kg, power: 120w, wind speed: 9-11m, air volume: 1500(m3/h), noise: 60db1.2m=48inch, body size: 120*15*19cm, weight: 9kg, power: 150w, wind speed: 9-111m, air volume: 1700(m3/h), noise: 60db