I have been using the Air-Care 20x40x1 Gold 20x40x1 filter for a number of years now and I am very happy with it - you can see how much dust it really captures. I ordered this 20 x 30 x 1 silver air purifying filter (because I couldn't find a gold one that size) for my other oven and it seems to be of the same high quality as my other gold one. It is very solidly built and has a decent weight. It is very easy to clean - I just use the hand shower to wash off. I've never felt the need to buy an ESD cleaning spray. I do try to wash it every month though - I live in Las Vegas and it gets pretty dusty because we use our air conditioners so often here. This is probably not recommended, but I use a very low power battery powered leaf blower to speed up the drying process so I can get it back up and running almost immediately. The fit is very good - even tighter than disposable air filters. Highly recommended if you don't mind washing it from time to time.
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