Just to confuse you more, I redid mine with tinted Lexan MR10 sheet, which I bought off of ebay for next to nothing, then cut out with a table saw then a jigsaw for the curves.
MR10 is a special coated version designed for exposure to UV and abbrasion, and its nearly bullet proof. Its also really light. I did that coming up on 4 years ago and they are still crystal clear and not scratched:
Lexan* MR10 sheets improved Margard® II coating resists abrasion and defies graffiti to ensure a "like-new" appearance for many years to come. The next generation of UV absorbers, Margard® coating now incorporates enhanced UV absorbers to protect the sheet from the debilitating effects of sunlight. As a result, Lexan* MR10 is accompanied by extended warranties that are your assurance of long term product performance; 10 yr. prorated replacement warranty against breakage, yellowing, abrasion, loss of light transmission and coating delamination.^ 15 year warranty against yellowing and light transmission for qualified dual glazed systems.** Virtually unbreakable. High light transmission common to all Lexan* sheet products. Easily maintained without marring, hazing, or yellowing. Compiles with major model building codes
