Each field is 4×36=144 panels (under 150).
Panel area: 5×7 ft = 35 sq ft → field covers 5040 sq ft of panels.
Or 4×7 ft = 28 sq ft → 4032 sq ft.
Footprint depends on orientation. Example (7 ft along length, no gaps):
252 ft long × 20 ft wide (5 ft panels) or × 16 ft wide (4 ft panels).
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