Review on SOURCEONE ORG Premium Thick Acrylic Plexiglass: Exceptional Clarity and Durability for Impeccable Results by Justin Hollins

If you don't want the full size 12" x 12" the product is fine. Unfortunately I did that and it didn't work for me. When I contacted the seller to inquire about a replacement I was told that this was the industry standard, for example a 2x4 piece of wood is not actually a 2x4. I guess I don't use plexiglass enough to know that. I wish it was in the description so I don't waste my time. My part is 11 7/8 x 11 7/8 as long as that's all I need I will buy again.