You can order it from Dazian directly, or I think they have an Ebay store as well. Just built a wood frame and stretched it around the frame and secured it with double faced adhesive velcro.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85