So glad they sent you thre designed screens. They are truly much better. The original design screens are so bad they fell out every time the ports were closed. Even had a wind gust blow one out one day. And of course they sink like stones.
Unfortunately I didn't get them as compensation for a poor design and had to buy them at something like $30 each. Even communicated with Lewmar that given their brand reputation for quality that I was so disappointed with the design of the original that came with my brand new Hunter 38 and that I had to spend $250 for 8 new design for a brand new boat.
No response from them.
Oh well, the reduction in frustration I was experiencing because of them falling out was some compensation and I decided to let it go and go sailing.
They are now 6 years old and I'm seeing signs of deterioration due to sunlight exposure. Primarily there is a plastic button type thing that holds the screens into the frames. They have begun falling off so I've applied a dab of silicone to reattach them. Probably need to replace them next summer.