Polarising filter for CTX 15" TFT

Hi,

I recently acquired a CTX 15 inch TFT monitor (model pv505) with a large scratch down the middle, right across the polarising filter on the front of the screen. Obviously, removing the filter caused the display to appear totally white. The actual screen and matrix are totally fine, no marks on it at all.

Is there any specific filter I need for that monitor, or is it possible to buy a generic filter to put over the screen?

I'm based in the UK, so any information on UK based suppliers would be great, but I welcome information of any kind about suppliers internationally.

Thanks in advance :-)