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Determing Flag Size
The length of the flag should be at least 1/4 the height of the pole. For example, a 40’ pole requires a 6’ x 10’ flag of larger. This guideline applies to poles 20’ and larger. Most residential flags are 3’ x 5’ or 4’ x 6’. Most small industrial and commercial buildings use either a 5’ x 8’ or 6’ x 10’ flag. Major industrial, municipal and government buildings require 8’ x 12’ and larger. However, the size of the pole is the determining factor.
  • Flagpole
  • 20’
  • 25’
  • 30’ - 35’
  • 40’ - 45’
  • 50’
  • 60’ - 65’
  • 70’ - 80’
  • 90’ - 100’
  • Flag
  • 3’x5’, 4’x6’
  • 4’x6’, 5’x8’
  • 5’x8’, 6’x10’
  • 6’x10’, 8’x12’
  • 8’x12’, 10’x15’
  • 10’x15’, 10’x19’
  • 10’x19’, 12’x18’
  • 20’x38’, 30’x50’
Flag length should be at least 1/4 the height of the pole.