Hi. Pretty long time I'm looking closely to the forums.funny-games.biz. I like tihsd forum. I'm not sure is the this right category , but I really need the anszwer. #8 UV-C lamps in air purifiers? I'm jjust wondering, how are the harmful rays of UV-C lamps that are located inside air purifiers are blocked? I saw a few purifiers that only had an uv lamp behind front grill adn a filter yt they still have a protectin that if you insert the grill improperly, the unit will not work. So how exactly do they protect against the harmful uv rays?