Anti-Glare filter for 24 inch TV?

Hi! I have a Sony Playstation 3D Display (that, ironically, I use primarily with a Wii U), and it's great! It has nice 3D and wonderful colors!

However, the screen is also really glossy. I often find myself closing windows so that I can see the screen better, which is annoying and makes me feel like a vampire.

I know they make anti-glare filters for laptops, but are there any large enough to fit my 24 inch screen? How well do they work, and what are the disadvantages?

Also, how difficult are they to put on? I'm not very good at applying screen protectors... I usually have BestBuy to do it for me, but that's easier to do with a phone than a TV.

Thanks a ton!