buy me now for 3s times the 24 x 30 filters. I can not and do not want no smoking. Unfortunately, I had on my last purchase many bad filter here, about 80% of the pack were riveting. They looked like clogged and you had to pull very strongly. I then poked free with a paper clip the yellow cap, worked but was a bit annoying to always have a paper clip here. Nevertheless, I will again buy me some, I hope this time I do not have this many rivets as in the last box ^^
