i have found it at menards. 26$ for a 4x6ft piece. or 30$ for a 4x8 piece. if your doing a 4x2x2 viv, you need the 4x8 piece. that will be enough for top, bottom, back, and even sides. they have like 30-40 different colors of melamine at menards! most of it is special order, but ours keeps the black in stock. very professional looking! we also get the round vents at menards as well.