The standard dimensions are 59x59x60,5cM, big enough for a Prusa I3. You can expand the dimensions by simpely add some extra parts in between. You can choose for your self to make the frame wider, longer or higher. On the botom of the frame is some free space available to fit in a standard 10x2mm steel or aluminum strip for extra stability. You only have to add some plates/sheets to finisch the enclosure. The frame is designed for 4mm acrylic or plastic sheets. You can glue the fitting sheets into the frame and finish it nicely with the included strips. The higlighted red parts are all that you will need to print this frame. Add some extra pieces of A2,B2,C2,E2 or A5 and D3to expand the dimension of the frame. The highlighted (red) parts in the picture are all you need to make the enclosure (standard dimensions). Below you can see how manny of which part you'll need. A1 1x A2 9x A3 2x A4 1x A5 3x B1 1x B2 9x B3 2x B4 1x C1 1x C2 2x C3 1x D1 1x D2 1x D3 3x E1 4x E2 12x Add some extra pieces of A2,B2,C2,E2 or A5 and D3to expand the dimension of the frame. The parts can be glued together or use some bolts through the connections.