There were gaps between the filter subtrate and the frame. The frame is too flimsy and flexes allowing unfiltered air to pass. The filter came with glue and debris covering the outside of it. Everything seemed poor quality overall. I most likely will find another manufacturer for my filters. A filter with this level of filtration should not be allowed gaps in the filter substrate nor a frame the flexes so easily to allow blow-by.
The filters arrived in good time. They fit properly. I can't rate their performance as I just started using them. They look to have more filtration capabilities than the ones I have been using.
I am very pleased with high-quality filters from filter buy and I will continue to be their customer. It is the only company solving the filters I need