I have bought a new panel air filter for my Tf. from Jetex.
There are not many pictures of this type online. I have included a few with comments.
This photo shows the code number for a TF.
The filter fits the airbox very nicely.
The gause construction in the pleated surface.
The sides and the ends have the length and width measurements moulded into them. If you ever picked one up second hand you would know it would fit.
Old and new filters together from the top. There is a lot of bleeding of sealant around the old filter.
Old and new filters from the bottom. The area that catches the dust,dirt and particles.
The old filter has a lighter line where the inner plastic tube of the intake hose touches. The new filter is thinner in depth so this will not happen.
The old filter has caught 'fluff' in the folds. This however could be restrictive to air flow. It was like this in every fold.
The open pleats of the new filter will not let this happen.
It still filters at 99% efficiency.
Other things to notice: The new filter is ever so slightly thinner in width and a touch longer. It still fits the air box perfectly well. The old filter has got trapped on the side due to being a bit wide.
To add another point. I have a link to a ford focus K&N panel filter. The Jetex and K&N look very similar. There are no K&N filters for the TF.