Very happy I found these inexpensive filter replacements. Honestly I never thought that our vacuum cleaner filters needed to be replaced or washed until it was too late. Pure ignorance I know. Our $400 Dyson died and when we went to repair it they stimated us nearly $250 for parts and labor so we just went ahead and got another new Dyson. According to repair man filthy filters were the cause of motor to die.
So with that in mind I constantly check filters and clean when needed but I thought it's good idea to have back up filters just in case. Having 2 kids at home I practically have to use vacuum cleaner every day, cookie cramps, dry playdoh, kinetic sand you name it, kids always have something for me to clean. For that very reason I cannot have filter washed and wait for it to get dry.
As of filters themselves. I did not test them but they are the same size and look exactly like the ones in our Dyson. I am certainly going to try them just to make sure they are a perfect fit even though they look exact and if something is wrong I will post.