Here’s the quote from the manual. I think it was G4.
Pre-match setup.
At the beginning of a Match, each Robot must meet the following criteria:
- Only be contacting the Floor.
- Fit within an 11” x 20” (279mm x 508mm) area, bounded by the Starting Position (see Figure 11).
- Be no taller than 15” (381mm).
Hope that helps.