Letter Visibility (In Inches)

Letter
Height
Distance for
Best Impact
Maximum Readable
Distance
3" 30' 100'
4" 40' 150'
6" 60' 200'
8" 80' 350'
9" 90' 400'
10" 100' 450'
12" 120' 525'
15" 150' 630'
18" 180' 750'
24" 240" 1000'