Classic build is a bit different then fully enclosed in sense that it uses original (version 1) pipe layout and may be extended to have removable enclosure.
![](https://piper3dprinters.com/wp-content/uploads/2018/12/Frame_2.2_Classic_2018-Dec-21_08-12-52PM-000_CustomizedView75206978165-1024x602.png)
![](https://piper3dprinters.com/wp-content/uploads/2018/12/Frame_2.2_Classic_2018-Dec-21_08-19-01PM-000_CustomizedView984056253-1024x602.png)
There are few differences. Instead of “frame-plate-holder.stl” you will need to print 4 “frame-Z_2x_corner.stl” from version 1 (red on picture above). Version 1 links
There are 4 additional pipes for diagonal support 524mm for front brackets and 535mm for back.
Y pipes for gantry are 445mm in length.
![](https://piper3dprinters.com/wp-content/uploads/2018/12/Frame_2.2_Classic_2018-Dec-22_04-40-22AM-000_CustomizedView24119310859-1024x602.png)