Honeywell 50000293-004 20" X 12.5" Post Filter For F50F & F300E 20" X 25", Price/each

Theses replacements slide right in the slots just like originals.They are every bit as sturdy as the Honeywell originals,they may even be the same ones.Extremely well made.

Fit the heating and ac unit i have

These air filters slide perfectly in a Honeywell F50F Electronic Air Filter (See the attached picture). The filter frame slides perfectly into the 0.4 wide slot on either side of the F50F allowing it to be a post or pre-filter. The frame was strong enough to slide even with a bit of resistance due to the tape overlap used to seal the F50F to the air ducts and not bend or break. A pair of filters is needed to fit across the entire F50F and these are provided as a pair.The F50F only has about a 0.4 slot width for the filter to slide into, and as most media filters are 1 thick, there are no options save for the ridiculously expense Honeywell filters. This Air Filter Factory filter is the most inexpensive choice at $40 for 2 filters. A Honeywell media post filter for the F50F or the F300 Electronic Air Filters will cost close to a ridiculous $180.These are meant to collect only the largest dust particles due to the large spaces you can see especially when holding up to the light (see picture with a 100W light bulb behind it) as these filters are meant to be used as pre-filters and stop the big stuff from getting through.However, in my system, the filters were installed on the post side. We installed them there to inspect after a few weeks to see how well the F50F electronic filter is working, hoping to see little if any dust collected by these post filters..

Well made and as good as anything for these type of all metal pre-filters. Fit our listed Honeywell model perfectly fine. Would definitely buy these again.

Replaced my old metal filters. Fit well. Good match to the old ones.

This is a more economical pre filter for your Honeywell air cleaner. I've ordered in the past and now glue/bond metal mesh edges into the frame upon receipt or they will pop out. Not the original Honeywell but a decent lower cost alternative. Would be nice if the manufacturer would weld the metal mesh to the frame to give it more stability.