Amazing powerful fan to prevent mosquito entering in our doorway. Our son has allergies to mosquitoes, and we have tried everything from mosquito pesticide services, which were very expensive to other outdoor mosquito control but this is the absolute best and most importantly is powerful and there’s no way any flying that can break through the curtain. Installation was straightforward… the company was very professional and shipped it within two days and we received it within 3 to 4 days