These are different than the filters I had before. When you insert the filter does the printed side face inward or does it face out? Thanks
1483339
I have been told "plastic to plastic, soft to soft" so I put the rougher side to the machine and it seems to be filtering just fine for me.
1483340
My filters have NO printing. But one side is more shiny and that's the side that goes toward the machine. Seems to be working very well, I even see more dirt trapped than with the originals!Bob
1931754
I place the metal side towards the intake, just like the filter in my air conditioner return. Neither of these filters offer an installation direction. I believe that the metal attracts larger charged particles before they enter the filter.
1449656
You haven't described the types of filters that you've tried in the past and that did not fit so no one can say for sure. These filters are shaped just like their photo - small cubes of about 1" x 0.5" x 1" (length, width and depth). The filter slot into which they're intended to fit is right about the same size. If your filter holder is close to that size then my guess is that it's probably worth a try for the few dollars these filters cost.
599746
This filter is 4 inches wide. I'm guessing that the slot for your filter is not that wide, since you've been using 1-inch wide filters; but you can check. I change my filter once or twice a year.
23079
can't remember what model our mother's is, but there was an open vent area on top that you had to take out screws to access and then the filter just sits in there kind of at a slant. It doesn't look like it goes there, but it does.
620052
Mesh side (the side with the 'Respironics' printing) facing the machine. In other words, if installed correctly you can NOT see the 'Respironics' printing. Previous two answers are NOT correct. My reference is the System One Owner's Manual
105613
They are not printed directly on them. There is a card behind each filter that has the info on it.
720866
My old filters also showed a model #: Unicel FG-1003. I was very confused about the model number as well. Last summer I replaced it with the FS-2003 since the dimensions seem to fit my measurements. They fit perfectly.
21963
That's a function of the filter cartridge. Be sure it's in right. It ought to have zeros on the display
1558782
The ones I received are the same on both sides so it doesn't matter which side faces where. Just remember when you wash them, do NOT use any soap, just use water and let thoroughly dry. Hope this helps.
90664
Had no problems with mine. You may not have twisted the filters back into their fully seated positions.
1740010
Remove by pull filter out of the side clean with soap dry it then install.Look at the front the filter is on the right side
557863
Sorry Arthur...I think you're right! I ordered a spare filter back in June and thought nothing of it. Then, I went to change my filter this morning and the one they sent me was wrong. My old filter has an opening on both ends and the new one does not. Plus, the part number is different. Maybe it's a new design but I'm not putting it in until I find out. Thanks for making me aware of this. I wouldn't put your's in either. Please let me know if you find something out from the company.
1988238
The grey faces down. The green side goes against the plastic squares. Make sure the filter is under the plastic squares so it does not get sucked up by the AC.
1250305
It is a little tricky. Try this - Insert the filter neck into the socket and rotate the filter backward (clockwise) until you feel a slight click then rotate counterclockwise (lefty loosey, righty tighty). It should seat with no problem. If not, you may have a stripped thread in the socket. Good luck.
2188340
It does matter. Place the "rounded" end of the filter in with the "square" part facing out.
2254249
Black side outward facing the room. With the machine upside down and the bottom removed. The filters have a notch cut in one corner. As inserted in the machine the notch should be at the bottom right corner.