Just though it would share this for eveyones benefit. I had been trying to construct two pairs of mattes for our 51" hd ready rptv, but could not find any material locally that would fit the length of the tv without joing two pieces together. I found a commercial plastics supplier locally who sells to the public and ordered two sets of mattes (1.85 and 2.35) made of 1/8th inch solid black plexiglass. I was willing to buy the whole sheet for about $50.00 when the salesman offered to cut them to size and sell the pieces for $20.00 total! I did all of this over the phone with my credit card and picked them up that afternoon. A little industrial velco and we were in business. They work awesome! They were cut straight and looked very professional (they look like part of the tv if you didn't know better) and I didn't have to anything but pay for them! I'm sure they will last longer than any other type of foam core material.